VARIATIONS
1911: Type 1 - No side holes 1 - 1962
Type 1a 2412 - 2480
Type 2 - 2 side holes 3062 - 3122
1917: Type 1 1 - 14798
Type 2 16969 - 18577 (1,609 P)
Description of 1917 Types:
Type 1 - Thick dies, 2 bottom slots, straight "7" in number
Type 2 - Thin 1918 dies, no bottom slots, curved "7" in number
1923: Type 1 - Gray 20-316
Type 2 - White 40-659
1937: Type 1 - No bottom slots 1 - 295
Type 2 - 2 bottom slots 16-893 - 67-267 (50,375 P)
1971-72: Some stickers have white band, some of which have a
serial matching the plate number rather than a serial
serial.
1975: First 20,000 stickers have "29" square sticker over "28".
Duplicate stickers have typewriter serial, not printed.
1976: Dies for letters "B" and "D" changed from square to round
between DBC and DBG.
1986: Late stickers have "VS" prefix.
