From the 1930s to the 1980s, various supplemental license plates and permits were issued in addition to other types of license plates. Some of the most common supplemental plates are PSC plates, which were issued from around 1932 to 1940.

This page includes the following plate types:

PSC Permits

PSC permits were first issued in 1932. They were primarily issued to trucks as supplemental plates, and carried many cryptic letter codes and color schemes. Some years have documentation on the meaning of these codes, while many years have no documentation on what these are and next to nothing is known about these plates, or how many other variations and codes may exist.

PSC permits had two different sizes they primarily used; one "small" plate type that was 4 1/2 by 10 inches, and one "large" plate type that was around 6 1/4 by 13 1/2 inches. The black on yellow 1932 psc permits and all 1933 psc permits were the larger size, while all other PSC permits are the smaller size. UPDATE 2024/05/24: I have recently discovered that the serial range given for the yellow "full size" 32 plate is actually a duplicate PSC permit! This particular example was a small sized plate; I do not know if the original exists out there, or if the person who provided that serial range made an error somewhere along the way. Either way, I've noted it in parathesis until I get more info on it.

1934, 1935, and 1939 have their color schemes fully documented, while 1935, 1936, and 1939 have their letter codes fully documented. The rest of the years are educated guesses of various reliability; I'm fairly confident that the information on 1938 and 1940 PSC permits is accurate, however some years, like 1932, 1933, and 1937, are complete guesses with little to no evidence to back it up. So take the designation information with a grain of salt for those kinds of years.

Base Private
32 (31549) 4960
33 637 Z
54400 Z
66 T (X?) 485 Y
1139 Y
34 1721
6307T 1641X
35 1325
7000T 1485X
2000FT 1500FX 1500FY
36 635
1659 (Numeric)
4599 T 216 X
(FT) (FX) (FY)
37 3208 P
2836 N (S?)
??? 3201MN
1932 PSC Unknown Carrier
Common Carrier??
Gideon Nicksic
1933 PSC Z
Private Carrier?
Gideon Nicksic
1933 PSC Unknown Carrier
Contract Carrier?
Gideon Nicksic
1934 PSC Contract Carrier
Contract Carrier
Gideon Nicksic
1935 PSC Private Carrier
Private Carrier
Gideon Nicksic
1936 PSC Priavte Carrier
Private Carrier
Gideon Nicksic

In 1938, PSC permits reworked the codes significantly. Contract carrier and common carrier plates were combined into one "contract/common" carrier class. Quarterly plates were issued beginning with the 38 base, with private vehicles over 8,000lbs, and contract/common vehicles of all weights, receiving these plates. Codes for tax-exempt and special permits were also introduced, with "R" and "A" being used for tax-exempt permits and "S" being used for special permits.

Letter codes alternated between bases from 1938 to 1940; private carriers alternated between "V" and "Z," while contract/common carriers alternated between "K" and "X." Tax-exempt letter codes alternated between "A" and "R," while quarterly and special permit codes were constant; "1" "2" "3" and "4" were used for quarter numbers, while "S" was always used for special permits.

Base Private
38 3133
Under 8,000 lbs
(Private Only)
226 V1 1136 K1
2981 K1
Quarter 1
967 V2
2492 V2
689 K2
1899 K2
Quarter 2
1170 V3 1146 K3
2910 K3
Quarter 3
1493 V4 2231 K4
2980 K4
Quarter 4
(VA) 5555 KA
Tax Exempt
(VS) 949 KS Special Permit
39 113
Under 8,000 lbs
(Private Only)
450 Z1
2631 Z1
1751 X1
2056 X1
Quarter 1
3871 Z2 271 X2 Quarter 2
(Z3?) (X3?) Quarter 3
(Z4?) (X4?) Quarter 4
384 ZR 8116 XR
Tax Exempt
2923 ZS 856 XS Special Permit
1938 PSC Private Carrier
Private Carrier
Gideon Nicksic
1938 PSC Contract Carrier 1st Quarter
Contract Carrier
1st Quarter
Gideon Nicksic
1938 PSC Contract Carrier Tax-Exempt
Contract Carrier
Gideon Nicksic
1939 PSC Contract Carrier 1st Quarter
Contract Carrier
1st Quarter
Gideon Nicksic
1939 PSC Contract Carrier Tax-Exempt
Contract Carrier
Gideon Nicksic

In late 1939, PSC Permits were issued by the MVD, and as such changed their caption to "MVD" instead of "PSC." These MVD permits were discontinued in July 1940 and it appears they were primarily replaced by tabs on heavy truck plate types, though "NOT FOR HIRE" plates without serials were issued from July 1940 to June 1941, presumably as a supplemental plate to go with 40 41 base light truck plates. Additionally, a reworked type called "lessor" began issuance sometime around 1942,. Quarterly MVD permits got up to the second quarter before being discontinued.

Base Private
39 120510 Under 8,000lbs
40 (Numeric?) Under 8,000 lbs
(Private Only)
218 V1
3924 V1
1292 K1 Quarter 1
3214 V2 (K2) Quarter 2
(VA) 11147KA Tax Exempt
777 VS (KS) Special Permit


Lessor plates were first issued in July 1940, set to expire in June 1941. The first plates had no serials, though by the 42-43 base they had serials on them.

Base Variation Ranges
42-43 149
44 45?
45 46?
1948 1
52 281
55 6" x 12" 542
1943 Wisconsin MVD Permit
Wisconsin MVD (fair use)

Between 1956 and 1959, lessor plates were split up into "private lessor" and "for hire lessor" plates, and were issued bicycle sized plates instead of full sized plates. From 1959 to 1962, for hire lessor plates were issued plates in the colors and replacement cycles of heavy truck plates, while private lessor plates used light truck colors and replacement cycles. From 1963 onward, plates have used calendar year replacement cycles and heavy truck colors.

Lessor plates were discontinued in 1972.

Base Variation Private For Hire
59 750 ?
60 860 1119
61 952
62 1200
63 1344 1
67 1016
68 999
69 2271
70 5108
71 27
1970 Private Lessor
Gideon Nicksic
1971 For Hire Lessor
Gideon Nicksic


Reciprocity plates were issued beginning in 1952, and were supplemental identification plates issued to out-of-state trucks and trailers having full reciprocity with Wisconsin. These plates were discontinued in 1961.

There is three different variations known for this plate type: one which is red on white, one which is black on white, and one that is black on yellow. The meaning of these different colored bases is not known, however it's been theorised that they may have been issued to different types of vehicles, or issued to different types of motor carriers.

Base Variation Ranges
Red/White 24915
A 200
Black/Yellow 25138
Black/White 4283

IRP Permits

IRP permits were small supplemental permit plates issued to apportioned trailers and semi-trailers operated by for hire carriers or owned rental companies. They were first issued in 1978, set to expire February 1, 1979, and the blue "WIS FEB" base was used for two years.

The green 1980 base shifted the expiration date from February 1 to December 31, and plates were issued annually through 1982.

In 1982, IRP permit plates were issued only to apportioned trailers and semi-trailers owned by rental companies, discontinuing the "1" and "2" sticker codes previously used.

The 1983 base appears in the 1983 plate guide, and samples have been found of these plates, however in the 1983 plate guide from the former plate room supervisor, there is a note on the IRP permit plates noting that they're "VOID" and "NOT ISSUED," so I'm guessing these plates were planned to be issued but the type was discontinued either very shortly after being issued or before they were first issued in 1983.

Base Variation Ranges Sticker Color
FEB 79 2592
80 4061
81 1 1981
82 (0000)
(83) (0000) (1983)

Peddler's License

While not technically a supplemental plate, I include these plates here as they are a type of permit.

Peddler's licenses were small permit plates issued primarily to horse-drawn vehicles beginning in 1911. Plates were white on dark blue all years, and the last seen base is from 1942.

In 1919, peddler's licenses had the expiration date and horse designation on aluminum tabs. For 1924 and 1925, they had the expiration date and horse information on embossed rectangles with the text debossed onto the embossed rectangles. By 1931, these designations were plain embossed text.

Between 1919 and 1939, the horse designation was in an abbreviated format of "2-H" and "1-H," while the horse designation on 1942 plates was "1 HORSE" and "2 HORSE." An "AUTO" designation is also known on a 1941 plate.

The expiration dates are in seemingly random intervals, and I don't know anything about their registration periods or the significance of the dates of these plates.

Base Variation Ranges
11-1-19 3278
5-20-24 6841
5-20-25 7860
8-25-31 474
9-21-35 4713
4-15-37 65650
2-28-39 7969
2-14-41 2404
6-1-42 3746

The following types are also shown in the Apportioned/Tractor page, as these plates have an ambiguious placement as to whether they belong with tractor plates, or they belong with supplemental plates.

Permit Reciprocity

Permit reciprocity plates were issued from 1956 to 1969. They were a type of permit issued to out-of-state trucks having limited reciprocity with Wisconsin.

Base Variation Ranges
56 PR 1509
57 PR 3184
JUN 59
DEC 59 PR 4784
60 PR 7054
PR 7066
61 PR 9417
62 PR 940A
63 PR14161
65 PR18545
66 PR20712
67 PR20959
68 PR24758
69 PR28632
1961 Wisconsin Permit Reicprocity License Plate
Andrew Turnbull
1962 Wisconsin Permit Reciprocity License Plate
Andrew Turnbull

In 1970, permit reciprocity plates were renamed to prorate plates. Prorate plates were issued from 1970 to 1971, then were discontinued and likely replaced with prorate bingoboard plate stickers.

Base Variation Ranges
70 PR32988
71 PR24977

Prorate Bingoboard

Prorate bingoboard plate stickers were issued from 1971 to at least 1989. As the name suggests, they were stickers issued to bingoboard plates.

Canadian Reciprocity

Canadian reciprocity license plates were issued to semi trucks having reciprocity with Canadian provinces. As of 1960 they were issued to semi trucks having reciprocity with Alberta, Manitoba, and Saskatchewan, and as of 1963 they were issued to semi trucks having reciprocity with Saskatchewan. Canadian reciprocity plates were discontinued around 1967.

Base Variation Ranges
56 CR 101
57 CR 733
58 CR 106
60 CR 532
61 CR 97
65 CR 99

Tax Only

Tax only license plates were another type of permit for out-of-state trucks having limited reciprocity with Wisconsin.

According to the 1985 Wisconsin plate guide, this confusing class of plates is "issued for vehicles currently registered in states having limited reciprocity with Wisconsin. Permits interstate operation only in accordance with reciprocal agreement with states imposing a tax on vehicles operated by Wisconsin residents."

These plates were issued from 1954 to 1986, then discontinued. Between 1975 and 1977 numbers for these plates dropped drastically and went from almost 10,000 numbers to less than 1000 in 1978, with the last found base in 1985 not even reaching 100.

Base Variation Ranges
55 244
62 926
67 639
69 453
71 123
72 9422
74 6058
75 543
76 879
77 883
78 186
79 626
80 126
81 238
82 103
83 368
84 1
85 74
86 (0000)
1972 Wisconsin Tax Only License Plate
Gideon Nicksic
December 1973 Wisconsin Tax Only License Plate
Timothy O'Connor
Created January 21, 2023. Updated November 25, 2023.