Multi-year plates validated by metal tabs were introduced in 1942. Due to WWII metal rationing concerns, the production of full-size plates was suspended from late 1942 to late 1943. In the meantime, small motorcycle-size plates with three or four letters and numbers in various configurations were issued to passenger vehicles.
The highest numeric serial confirmed on the 1942 base is 771 626.
![[Wisconsin 1945]](wispix/42-232-so.jpg)
(SO)
After 1945, Wisconsin became the first state to stagger registrations between all twelve months of the year. Motorists received a new plate expiring anywhere from June 1946 to May 1947. "46"-dated plates were distributed only for codes from "6" to "12," while "47"-dated plates only encompassed codes "1" through "5." Subsequent new registrations received undated baseplates.
![[Wisconsin 1948]](wispix/46-06-1.jpg)
(at)
![[Wisconsin 1952]](wispix/46-10-3-js.jpg)
(JS)
Numerous base, die, and stamping variations may be found on these plates. A fair number of motorists ordered replacement plates during this six-year timespan, so later plates with lower numbers and mismatched pairs abound:
![[Wisconsin 1946]](wispix/47-9a.jpg)
Original 1946 plate (at)9
![[Wisconsin 1952]](wispix/46rm-09-015-9.jpg)
Ca. 1951 remake of same number (at)9
Confirmed serial ranges and break points:
| 46/47 passenger | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 46 dated, small prefix |
6-1 6-30000 |
7-1 7-10000 |
8-1 8-60000 |
9-1 9-2612 |
||||||||
| 46 dated, large prefix |
6-30001 *6-62324 |
7-10001 7-27972 |
8-60001 8-84059 |
9-5368 9-95754 |
10-1 10-90796 |
11-1 11-57175 |
12-1 12-81070 |
|||||
| 46 dated, diagonal prefix |
11-61653 11-77126 |
|||||||||||
| 47 dated |
1-1 1-80935 |
2-1 2-92628 |
3-1 *3-83228 |
4-1 4-91307 |
5-1 5-92462 |
|||||||
| Undated, narrow bolthole position |
1-88764 1-96948 |
2-95007 2-99662 |
*4-97647 |
6-75043 6-84226 |
*7-30625 7-37313 |
10-92864 10-98673 |
11-79131 11-87852 |
12-92726 12-99376 |
||||
| Undated, wide bolthole position | 1-97105 |
3-81153 3-92467 |
6-87244 |
7-41134 7-49172 |
8-90090 8-96515 |
11-94745? 11-96875 |
||||||
| Undated, squared corners |
1- 98938 1-120-000 |
2-106-319 2-120-822 |
3-100-234 3-128-330 |
4-102-882 4-130-196 |
5- 97002 5-130-148 |
*6-89976 6-123-090 |
7- 59301 7- 85281 |
8-100-379 8-129-662 |
9-104-107 9-128-558 |
10-101-973 10-121-955 |
11- 97890 11-107-779 |
12-101-081 12-126-176 |
In 1952, the license plate format was changed to implement a stamped month abbreviation and alpha serial prefix. Alpha prefixes were keyed to the month of expiration, and through 1960 a two-letter format was employed if a given month series overran its initial allocation. A series of two-year bases (or three-year, in the case of the 1965 issue) followed. Adhesive stickers replaced metal tabs in 1961 (coinciding with 1962 expirations), although tab slots were retained on the baseplates themselves through 1963.
![[Wisconsin 1956]](wispix/55lk.jpg)
Late 6" x 12" issue (at)1
![[Wisconsin 1958]](wispix/57-0k410.jpg)
(at)
![[Wisconsin 1957]](wispix/57v6.jpg)
(at)
![[Wisconsin 1958]](wispix/57v9.jpg)
(at)
![[Wisconsin 1960]](wispix/59-0k410.jpg)
(at)
![[Wisconsin 1960]](wispix/59v1.jpg)
(at)
![[Wisconsin 1960]](wispix/59cl.jpg)
(at)4
![[Wisconsin 1960]](wispix/59vl.jpg)
Late variation in 1961 stamping style. (at)
![[Wisconsin 1962]](wispix/61-0q410.jpg)
(at)
![[Wisconsin 1962]](wispix/61y.jpg)
(T)
![[Wisconsin 1961]](wispix/61wm.jpg)
All '61 "W" plates use an inverted "M."
![[Wisconsin 1964]](wispix/63-0q410.jpg)
(at)
![[Wisconsin 1964]](wispix/63g4.jpg)
(at)
![[Wisconsin 1964]](wispix/63p3.jpg)
No tab slots. (at)
Confirmed serial ranges and break points:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 53 |
A 1 A99-899 |
B 1 B96-337 |
C 1 C99-880 |
D 1 D99-902 |
E 1 E99-119 |
H 1 H97-850 |
J 1 J82-449 |
K 1 K92-211 |
L 1 L97-398 |
P 1 P86-533 |
T 1 T85-766 |
V 1 V98-526 |
|
| 55 | 6.25" x 13.5" |
A 1 A95-719 |
B 1 B99-157 |
C 1 C99-999 CK-1001 CK-8718 |
D 1 D99-999 DK-1001 DK-7766 |
E 1 E99-999 EK-1001 EK-9082 |
H 1 H99-999 HK-1001 HK-1768 |
J 1 J93-066 |
K 1 K99-999 KK-1001 KK-8366 |
L 1 L99-999 LK-1001 LK-5970 |
P 1 P99-999 PK-1001 PK-1974 |
T 1 T93-836 |
V 1 V99-999 VK-1001 VK-3210 |
| 6" x 12" | J94-447 | KK-9148 | LK-8012 LK-9711 |
PK-4134 PK-4551 |
|||||||||
| 57 |
A 1 A99-999 AK-1001 AK-8847 |
B 1 B99-999 BK-1001 *BK-8497 |
C 1 C99-999 CK-1001 CL-8782 |
D 1 D99-999 DK-1001 DL-8760 |
E 1 E99-999 EK-1001 EL-8113 |
H 1 H99-999 HK-1001 HL-5426 |
J 1 J99-999 JK-1001 JK-3039 |
K 1 K99-999 KK-1001 KL-9445 |
L 1 L99-999 LK-1001 LL-1910 |
P 1 P99-999 PK-1001 PL-1245 |
T 1 T99-999 TK-1001 TK-5300 |
V 1 V99-999 VK-1001 VL-3895 |
|
| 59 | WIS right of bolt |
A 1 A99-999 AK-1001 AL-3607 |
B 1 B99-999 BK-1001 BK-9914 |
C 1 C99-999 CK-1001 CL-8765 |
D 1 D99-999 DK-1001 DN-2572 |
E 1 E99-999 EK-1001 EN-9076 |
H 1 H99-999 HK-1001 HN-5861 |
J 1 J99-999 JK-1001 *JK-6809 |
K 1 K99-999 KK-1001 KN-4060 |
L 1 L99-999 LK-1001 LL-9663 |
P 1 P99-999 PK-1001 PK-7270 |
T 1 T99-999 TK-1001 *TK-6210 |
V 1 V99-999 VK-1001 VL-6971 |
| WIS left of bolt | LN-1807 | PL-5718 |
VL-7611 VL-8027 |
||||||||||
| 61 |
A 1 A99-999 B10-001 B20-995 |
C 1 C99-999 D10-001 D25-344 |
E 1 E99-999 F10-001 *F39-367 |
G 1 G99-999 H10-001 H39-731 |
J 1 J99-999 K10-001 K42-779 |
L 1 L99-999 M10-001 M35-362 |
N 1 N99-999 P10-001 P17-497 |
Q 1 Q99-999 R10-001 R42-294 |
S 1 S99-999 T10-001 T33-321 |
U 1 U99-999 V10-001 V21-534 |
W 1 W99-999 X10-001 X21-009 |
Y 1 Y99-999 Z10-001 Z30-064 |
|
| 63 | Tab slots |
A 1 A99-999 B10-001 B34-386 |
C 1 C99-999 D10-001 D29-502 |
E 1 E99-999 F10-001 F44-370 |
G 1 G99-999 H10-001 *H51-183 |
J 1 J99-999 K10-001 K48-880 |
L 1 L99-999 M10-001 M50-727 |
N 1 N99-999 P10-001 P25-557 |
Q 1 Q99-999 R10-001 R41-893 |
S 1 S99-999 T10-001 T40-782 |
U 1 U99-999 V10-001 V40-030 |
W 1 W99-999 X10-001 *X25-755 |
Y 1 Y99-999 Z10-001 Z30-517 |
| No tab slots |
P36-681 P38-636 |
X27-062 | |||||||||||
| 65 | Tab slots | A 1 A1n-nnn |
|||||||||||
| No tab slots | A21-305 | ||||||||||||
| Tab slots | A34-057 | ||||||||||||
| No tab slots |
*A49-714 A99-999 B 1 B46-991 |
C 1 C99-999 D 1 D48-353 |
E 1 E99-999 F 1 F71-094 |
G 1 G99-999 H 1 H77-452 |
J 1 J99-999 K 1 K85-369 |
L 1 L99-999 M 1 M81-302 |
N 1 N99-999 P 1 P61-727 |
Q 1 Q99-999 R 1 R75-558 |
S 1 S99-999 T 1 T66-121 |
U 1 U99-999 V 1 V62-876 |
W 1 W99-999 X 1 X44-056 |
Y 1 Y99-999 Z 1 Z47-680 |