VARIATIONS

1918:     20725 - 27684 have blank back,

         (28152 highest actually issued),

          28165 on back of R.I. 1918 #X6190,

          28174 on back of R.I. 1918 #10780,

          28182 on back of Mass. 1917 #11,173,

          28186 on back of R.I. 1918 #X4568,

          28204 on back of Mass. 1917 #0146G,

          28206 on back of Mass. 1917 #0362F,

          28209 on back of Mass. 1917 #0205M,

          28211 on back of Mass. 1917 #0823F,

          28219 on back of Mass. 1917 #59,853,

          28231 on back of Mass. 1917 #67,210,

          28232 on back of Mass. 1917 #34,154,

          28233 on back of Mass. 1917 #25,174,

          28243 on back of R.I. 1919 (#35298 reported)

          28268 on back of R.I. 1918  #X2347,

          28285 on back of Mass. 1917 #0739M,

          28286 on back of Mass. 1917 #0407F,

          28301 on back of Mass. 1917 #58,320,

          28307 on back of Mass. 1917,

          28315 on back of Mass. 1917 #0242F,

          28335 on back of Mass. 1917 #87,806,

          28350 has blank back.

1924-33:  2 additional holes in upper mid-field.

1929-30:  4-digit followed by space.

1931:     4-digit preceded by space.

1943 TAB:  Passenger tabs have square LL corner, M/C is rounded.

1946:     Hyphen precedes 1-3-digit numbers.

1947:     No hyphen on 4-digit numbers.

1952:     445 - 10-921 have date restamped over "51";

          16-641 - 73-597 normal.

1954-55:  See main page.

1956:     See main page.

1960:    C49479 has small "C", C50596 - C55477 have full-sized "C".

1961:    O/R 3352 - O/R 3448 are stacked, OR4204 is unstacked.

1963:    W50161 - W55189 have inverted "M", W49724, W55238 have

         normal "W".

1964 STRIP:  Late issues have no serial number.

OTHER VARIATIONS 1969-85

Type 1:  WP378 - WP454 have inverted "M",

         WP10, WP2813 have normal "W".

Type 3:  ORW-ORZ have square "O", OAA-OCG have oval "O".

         CFS860, HU8502 have oval zero, CLF602 has square zero.

Types 4-5:  County name stickers optional.

STICKER VARIATIONS

1971:  JAN-JUN have small date, with serial horizontally below,

       JUL-DEC have large date with serial vertically at left.

1974:  1-7 are large size, 8-12 are small size.

1977:  1-7 have large rounded date, 8-9 have large square date,

       10-12 have smaller square date.

1983-2003:  Mail-order stickers have different design, with

            serial matching plate number (in white box 1985,

            1987-90, 1994, 1999, 2003)