VARIATIONS

1917:  Type 1 - S.G. Adams, diagonal "SC"   5002 - 34811 (29,810 S)

       Type 2 - NY 1916 dies, horiz. "SC"  35311 - 39255  (3,945 S)

       Type 3 - 1918 dies, horiz. big "SC" 40289 -

1920:  Type 1 - Wide oval "0" of date   5-370 - 28-484   (23,115 S)

       Type 2 - Round "0" of date      46-148 - 97-076   (50,929 S)

1922:  Type 1 - 16"     length, 4 slots

                A- 341, B 23 - B 1-288, C 576 - C 768     (1,268 S)

       Type 2 - 15 1/2" length, 2 slots A 6-362 - A51-867,

                B 6-830 - B 8-177, C 2-282 - C 9-481     (53,504 S)

       Type 3 - 14"     length, 4 slots

                D-139 - D-3438, E 23 - E1043              (4,319 S)

1923:  No hyphen on 4-digits.

       Type 1 - 16" length  (A,B,C series)              (100,493 S)

       Type 2 - 14" length  (D,E,F series)                (2,360 S)

1924:  Series A100-000 - A109-999, A110-000 - A110-999 and

       A112-000 - A112-999 have thinner dies in underlined digit.

1925:  Verify A100-000+ die variations.

1933:  "SC/33" legend is center-justified along with serial number.

1942:  Type 1 - New plate All A,B,C,E,F,G, D-69-753

       Type 2 - Restamped D-81-911

1943:  Type 1 - Restamped A-2-210, B-46-188, 134-334, D-87-385,

                          E-9-532, F1-697, G-837

       Type 2 - New plate 139-920 - 149-401, D-90-396 - D-93-034,

                          E-12-125                       (12,122 S)

1947:  Type 1 - New plate All A,B,D,E,F,G, C-128-029

       Type 2 - Restamped C-135-575

1955:  Type 1 - 12 1/2" length, square legend All A,B,C,

                          D-373-732, E-72-184, F-8-630 G-1-347

       Type 2 - 12" length, rounded legend D 378 453 - D 408 591,

                          E-83-731 - E-92-488,

                          F-16-541, G-1-553              (38,899 P)

1956:  Type 1 - Legend bottom  A-2-381, B-9-454, C-61-224,

                          D 427 237, E-83-609, F-17-231, G-1-925

       Type 2 - Legend top D 431 838 - D 440 404, E 106-420 (8,568 P)

1959:  Type 1 - 4 corner holes A-8-454, B-6-108, C-34-150,

                          D 442 836, E 130 789, F-34-180, G-2-203

       Type 2 - No corner holes A-9-241 - A-10-728, B-9-943,

                          D 446 174 - D 448 842, E 131 935 - E 148 731,

                          F-38-631 - F 40-250            (22,575 P)

                          F 40-250 has one hyphen

1960:  Type 1 - 4 corner holes A-5-641, B-7-341, C-34-755,

                          D 200 241, E-45-624, F-30-319 (322,723 P)

       Type 2 - No corner holes A-100, A-512, A-6-475 - A-14-782,

                          B-11-271 - B-15-128, C-35-163,

                          D 201 486 - D 428 583, E-58-828 - E 173 098,

                          F-785, F-39-942 - F-50 200,

                          G-934 - G-7-744               (370,606 P)

                F-48-918 has two hyphens, F-50 200 has one hyphen

1962:  Type 1 - Embossed, non-reflective All A,B,C,G,

                          D-1 - D-39-738, D-50-152 - D365300,

                          E-1 - E-18-640, E-27-205 - E202215,

                          F-1 - F-20-890, F-30-366 - F-56-224

       Type 2 - Embossed, partially reflective    (10,000 reported)

                          D-40-136 - D-48-181             (8,046 P)

       Type 3 - Debossed, fully reflective  (5,000 E, 5,000 F rep.)

                          E-20-023 - E-22-825,            (2,803 P)

                          F-26-398 - F-29-897             (3,500 P)

1964:  1 hyphen - DQ-4863, DT-8876, DW-1936 - DW-6839

       2 hyphens - DU-2-045 - DU-8-006,(DV-1-090 - DV-1-400),

                 DX-8-025 - DX-9-592, DZ-4-028 - DZ-9-361, EP-2-977

1967:  Curved or straight "7" of date; no specific pattern.

1975:  Late issues galvanized steel, not plain steel.

STICKER VARIATIONS

1984 Type 1  7000001 -  8787194    (NOV) Type 2  9083238 -  9134544

1985 Type 2  1000001 -  2671879    (MAY) Type 1  2735404 -  2939093

1992 Type 3

1993 Type 3  1000001 -  3626397      (3) Type 4  3837014 -  3943835

1994 Type 3  4000001 -  6062777      (4) Type 4  6623665 -  6715950

1995 Type 3

1996 Type 3                              Type 4

1997 Type 3 70548172 -               (6) Type 4 75979457 - 76706794

1998 Type 3 80125507 -               (3) Type 4 85406660 - 85837135

2000 Type 3 00012723 - 00644637          Type 4 05682774 - 06987491

2001 Type 3 11318494 - 11492285          Type 4 15709017 - 15758383

2002 Type 3 12542721 - 12648641          Type 4 25476281 - 26008638

1999:  4 types of month stickers seen, one is non-reflective.

Description of Types:

Type 1 - Thin date                         Type 3 - Normal serial

Type 2 - Thick date                        Type 4 - Computer serial