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    OKLAHOMA

            MOTORCYCLE         DEALER            TRACTOR           PASSENGER
    1915      1 - 4000*   29001M - 29750M*    29751 -  29919      4001 -  29000,
                                                                 31620 -  33183*
    1916    248 - 1968      (reportedly       36091 -  36522      2598 -  34770,
                             not issued)                         41109 -  60292
    1917      1 - 2500*    4501M - (6500M)     2501 -   4500      6501 -  70000,
                                               5908 -           (70001) 84138
                                              89173 -  89622     90692 - 106256
    1918      65 - 1044    2561M -  3935M      9346 -            18205 - 131101
    1919       1 - 2000*   2001M -  4000M      4001 -   8000*     8001 - 156250
                                               3993 -                          
    1920     97 -  732     2560M -  3076M      4288 -   6832      8647 - 202348
                  (2000 S)         (2000 P)            (4000 P)         (152000 P)
    1921    548 -  549     2440M -  2921M      5663 -   7828     10226 - 179966
                                             194270 -           201933 - 214797
                                             215252 - 219380    226649 - 231184
    1922      1 -  503    20-64M -            3-000 -  9-765    11-000 - 247-413
                                            250-297 - 250-661  258-942 - 260-939
    1923                                       3998 -  12763    18-590 - 312.472

               TRACTOR           FORD PASSENGER   ALL OTHER PASSENGER        TRUCK
    1924    3.120 -  14.735     15F001 - 181F405   190.971 - 248.070   251T331 - 269T070
                               351F298 - 363F875   273-559 - 339-663   371T443 -
                               374F541 - 387F063                                        
    1925    2-088 -  13-925     15F658 - 219F449                       226T322 - 242T348
           389279 -  389336    245F985 -           261.401 - 334.469   246T334 - 256T947
           446677 -            338F805 -           345.638 - 372.651
                               395F853 -           400.100 - 434.202
                               436F623 - 441F981   451-480 - 452-239   453T913 - 453T983
    1926    4-743 -  15-790     19F736 - 316F829   331-822 - 483-706   485T503 - 524T359
          569-039 - 569-783                        533-027 - 557-625*  570T807 - 572T092
    1927    6-861 -  26-597*    31F692 - 374F683   495-164 - 673-112*  443T219 - 477T752
    1928    5-919 -  34-830*    36F189 - 369F536   482-674 - 726-596*  423T742 - 475T298
                                                                       800T071 - 809T237*

               TRACTOR             PASSENGER               TRUCK
    1929    5-922 - 26-218      53-258 - 570-229*     610T016 - 669T638
    1930   13-930 - 45-612*     63-982 - 596-927*     708T609 - 784T797*
    1931   10-097 - 48-131*     60-001 - 563-410*     750T264 - 819T698*
    1932   10-657 - 35-574*     69-602 - 463-642*     705T731 - 805T944*(see weights below)
    1933   10T263 - 39T232*     65-176 - 480-542*     756T507 - 824T981*(see weights below)
    1934   20 444 - 53 464*     62A569 - 505A003*     607T672 - 661T752
    1935   23 438 - 50 107      61A254 - 505A051*     608T648 - 649T824
    1936   21 631 - 56 485      62-274 - 515-246*     702T728 - 797T948*
    1937   21-714 - 58-870      60F228 - 527F944*     604T932 - 697T207 (F or R above T)
    1938       (none)           60-001 - 545-816*     680T357 - 778T641
     
    KNOWN 1932-33 TRUCK PLATES BY WEIGHT
                       1932                                                  1933
      3/4 TON    705T731 -        , 750T227                            750T227 - 756T507
    1     TON    711T826 - 715T784, 800T019 - 801T556, 805T944         761T069 - 782T213
    1 1/2 TONS   732T830 - 749T362                                     793T759 - 814T149
    2     TONS                                                         822T703 - 824T981
    3     TONS
    4     TONS
    Over 4 TONS
     
    OTHER NON-PASSENGER TYPES SEEN 1924-38
     
            MOTORCYCLE       DEALER          TAX EXEMPT        PVT-TRAILER
    1924
    1925                  M1111 -
    1926    862 -        M1-668 - M2-453
    1927                 M1-695 -
    1928                 M2-453 - M3-181
    1929    732 -        M2-223 - M3-290
    1930   2097 -        M5-588 - M6-785
    1931                 M5-505 - M5-705
    1932   2659 - 3383   M5-583 -
    1933   3247 - 3376   M5-483 -        ("DOLLAR" 1934-35)
    1934    832 - 1267                     3-233 - 10-675*
    1935                 D1-842 - D2-485   7-473 - 12-789*
    1936   1527 - 1642                     5-050 - 13-093*
    1937    327 -  559                     5-466 - 12-912*
    1938    673 - 1181   D2-875 - D3-492   4-067 - 13-090*   23-706 - 54-626
     
                TRAILER                  BUS             MONTHLY COMMERCIAL
    1933   860-351 - 870-302*       ("TAXI" 1935)        950-001 - 990-000
    1934   704-550 - 714-459*     754-322 - 754-529      800-001 - 890-000
    1935   700-927 - 716-063*     750-312 - 750-979      800-001 - 860-000
    1936   600-656 - 611-446*     625-156 - 629-899*     800-001 - 860-000
    1937   702-078 - 729-307*     734-955 -              800-001 - 860-000
    1938                          602-686 -              825-001 - 885-000
     
             SEMI-TRAILER
    1934   725-908 - 730-806
     
    NOTES
    1924:     400,000 P manufactured.
    1925:     County issuance began.
    1934-35:  A = Automobile.
    1936:     R = Rear, Hyphen only = Front.
    1937:     R = Rear, F = Front.  #F 3 also seen.
    1938:     #571 also seen. 

    1939 FORMATS                                                   No I used.
    4-FIGURE PASS.      A000 - Z999, 0A00 - 9Z99, 00A0 - 99Z9, 000A - 999Z
    5-FIGURE PASS.   A/A 000 - S/W 751
    TRUCK            U/M 658 - Y/N 044
     
    LETTERS NOT SEEN (D000 - D999 issued; no conflict with Dealer #D2-066 seen)
    A000 -   C EFG IJ  MNOPQRSTUV X Z                    A/A 000 - I J O T Z
    0A00 - A CD  GHIJ LMNO      VWXY                     A/A 000 - I
    00A0 - ABCDEFG IJKL NOPQRS UVWXY
    000A -  BC E  HIJKLMNOP RSTUV XYZ
     
     
    Pass.:  500,000 ordered, 476,000 made (A000 - 000A = 100,000, AA 000 - SZ 999
                                           without JA-JZ and OA-OZ = 400,000)
    Truck:  125,000 ordered, 115,000 made (TA 000 - XZ 999 = 125,000)

    County allocations unknown.  Adair Co. (Stilwell) began at DW 400, Truck VS 550.
    Pontotoc Co. assigned PH 700 - PH 999, PJ 000 - PJ 999, etc., Truck TX 60 (050?).
    Comanche CU seen.
     
    NUMBER OF COUNTY AGENTS
    1932 - 130, 1956 - 185, 1974 - 208, 2003 - 307.

    1940-55 FORMATS                FORMATS ADDED        1956-62 FORMATS
     1-1 - 9-99999      1950-55  1-A1001 - 1-E9999       1-1 - 9-299999
    10-1 - 77-9999      1949     10A-101 - 10C-999      10-1 - 77-19999
                        1950-55  10-A101 - 10-G999

    1947 TAB   417484 - 788929, Farm 938075
     
    Certain counties exhausted original format in 1941, 1943 and 1945-48.
    It is unknown if 7-digit, lettered or "0" plates were issued for overflow.

    1940-62 COUNTY CODES (ALL LISTED UNDER "COUNTY CODES")
    1. 1940-41 order based on number of license plates sold.
    2. 1942-44 order same as 1948-51 except counties 7-18.
    3. 1945-47 order same as 1948-51 except counties 9-15, 41-44, 47-49, 61-62.
    4. 1948-51 order based on 1940 U.S. Census, except Pittsburg (48,985) is 10,
       not 9, Le Flore (45,866) is 11, not 10, and Garfield (45,484) is 9, not 11.
       Ironically, none of the three codes from 1942-51 match the census exactly!
    5. 1952-61 order based on 1950 U.S. Census.
    6. 1962 order based on 1960 U.S. Census.

    0 prefix:  Probably used for overflow; 1946-47 #0-10031 - 0-11393 seen.


    1963-64 FORMAT   AD-0001 -  ZZ-9999
    1965-81 FORMAT      AD-1 -  ZZ-9999
    1971-72            CSS-1 -  CSS-999 added (also expected 1969-70)
    1973-81            CSS-1 - CSS-9999 added

    1963-81 county codes on Misc. 2 page.  Codes derived from
    county names, except Oklahoma (XA-YZ) and Tulsa (ZA-ZZ).

    No Q used.  No I used except CI, WI.
    No B,G,O,U used in XA-ZZ series, but gradually added in order after
    XZ in 1963-65, and ZZ in 1970-74.

    Plates seen above expected highs:
    1964 XG-7634, 1966 YA-5529, ZY-3388, 1970 ZB-7446, 1971 ZG-6787,
    1973-74 see Variations, 1975 CVV-2498, ZZB-1319, 1976 CZZ-400,
    1979-80 CCB-5791, ZZJ-4066


    1971-81 3-LETTER CODES (Year introduced)
    Canadian  1972 CNN,CXX,CCN             Kay          1979 KAY
    Carter    1973 CRR                     Muskogee     1981 MKK
    Cherokee  1976 CZZ                     Oklahoma     1981XXA,XXY,XXZ
    Cleveland 1972 CLL,CVV,CFF             Okmulgee     1981 OML
              1973 CLL,CVV,CYY,CLE,CLV,CLY Osage        1981 OSG
    Comanche (1974 CCC)                    Ottawa       1979 OTT
              1978 CCB,CCH,CMH             Payne        1979 PYY
    Craig     1981 CGG                     Pittsburg    1981 PPB
    Creek     1978 CKK                     Pottawatomie 1978 PTT
    Custer    1971 CSS                     Stephens     1981 STE
    Grady     1981 GDD                     Tulsa        1974 ZZA-ZZP


    TOTALS OF 3-LETTER PLATES EXPECTED PER REGISTRATION FIGURES (EXCEPT
    ALLOCATIONS 1981):
    (1969-70 not seen; Custer may have borrowed from other counties)

    1969      163            1975    18,859    1%
    1970      106            1976    34,268    2%
    1971      341            1977    47,488    3%
    1972    4,937            1978    79,094    5%
    1973   11,166            1979   108,076    6%
    1974   14,057    1%      1981   333,075   15%


    1979-80 PLAIN BASE                    County codes same as 1963-78.
    7-1-78  "FEB 79"   AD-1 - ZZ-9999, CCB-1 - ZZP-9999

    Replaced during 1980.


    1981-82 MAP BASE                      County codes same as 1963-80.
    Jan.80  "FEB 81"     AD-1 -  ZZ-9999,     No I,Q used except CI,WI.
                        CCB-1 - ZZP-9999
                                                    (TOTAL 2,178,524 S)

    All bases 1981-2009 replaced during 2009.


    1983-89 SUNBELT BASE                          No F,I*,Q used except
    2-1-82  "FEB 83"    ADB-1 - ZWJ-999           CFA-CFZ,JFA-JFG (no
                                                  CFF,JFF).

    Issued to new registrations only.  County codes are new 3-letter
    codes with 1st 2 letters based on 1963 system, except Cimarron and
    Jefferson.  *I added c.1987 in 19 counties.
    1985 #RAT 396 seen with no map - vanity?
                                                    (TOTAL 2,591,239 S)


    1989-94 SHIELD BASE                           No Q used.  I added.
    Jan.89  "DEC 89"    AAA 001 - ZYZ 999         No F in 3rd position.

    Issued to new registrations only.  County codes are continuation of
    1982 system, except leading zeroes added.  Generic series added for
    use in any county:  "DEC 89"  AAA-ACZ, AEA-AES.
                                                    (TOTAL 2,638,811 S)


    1994-2009 NATIVE AMERICA BASE     No F used in 3rd letter position.
    Jul.94  "SEP 94"    AET 001 - YZZ 999,   Q,F added in 1st position.
                        001 CAA - 295 ZZE

    Issued to new registrations only.  County codes are continuation of
    1982 system, plus suffix combinations.  Q added in 2nd-3rd letter
    positions c.1995 in 47 counties. 
                                                    (TOTAL 8,058,046 S)
                                             (GRAND TOTAL 15,466,620 S)
     
     
    2010-17 SACRED ARROW BASE         No F used in 3rd letter position.
    1-2-09               001AAA - 922MNI                  (6,943,972 S)
     
    Omitted suffixes:  BSA, CAA-CZZ, EJC, EOS.
    Assumed omitted:  MAA-MAK, MCA-MDB, MEA-MEM, MGA-MGZ, MIA-MIG,
                      MKA-MLZ, MNA-MNC, MRA-MRM, MSA-MTG, MUA-MUZ,
                      MYA-MZR, NAA-NDA.
    Verify:  DAA-DBA, EAA-EDZ, HAA-HBS, JAA-JCU, KAA-KGH.