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Missouri began a new general issue replacement base on June 16, 2008. There will be some changes that will look familiar since they are a throwback to earlier issues. The new base features an embossed month, as well a having the first letter of the registration keyed to the expiration month, however, some month letters are different from earlier issues. Passenger format is AA1 A1A, but since the plates will begin in June, the first series will be JA rather than AA, which would be a January issue. It has also been reported that personalized plates, which originally had July expirations but were later changed to January, will return to July expirations. The validation sticker will be placed in the center of the plate.
Stickers issued by the MODOR Central Office and in City of St. Louis are now printed with the plate number to prevent theft. Stickers printed at license offices with the plate number to prevent theft are also available at Kansas City and Springfield area offices now.

The first alpha on most new plates, including Passenger, RV, and Truck 6 & 12, will represent the expiration month. For plates that expire in the same month, such as Truck (18-80), the configuration will be random with no alpha representing an expiration month.

Matthew Hicks reports that some plates with a DE- (March), FE- (April), and HE- (May) prefix feature a much darker state outline and slightly darker shade of blue for the color fade on the bottom of the plates. It is unknown if this will be a universal change or just a production variation within some of the plates.

Stickers
11 - white on black
12 - black on red
13 - black on green
14 - black on orange
15 - black on yellow
16 - white on black
Type Plate Notes Reporter
Bluebird see notes As mentioned above, the first letter on the new base is keyed to the expiration month, as was traditionally done on earlier Missouri plates prior to the last base that is now being replaced.

We have some updated information regarding the progression of the current Missouri Passenger base. Please disregard what was previously posted.

Missouri does not use the letter "O" on Passenger plates, but the numeral zero (0) is used in the third position, or first numeric position on some plates. There are only two numbers in the current format, and they appear in the third and fifth position on Passenger plates. The numbering follows a basic 01-99 progression, with the numbers progressing ahead of the letter.

Here is how the progression works. Remember that two numbers only are used on these plates, and they always appear in the third and fifth position. The letter "O" is not used, so if it looks like an "O" on the plate, it's actually a zero.

Using January as an example, the first plate would have been AA0 A1A.

AA0 A1A > AA0 A9A

AA1 A0A > AA1 A9A

AA2 A0A > AA2 A9A

and so on through

AA9 A0A > AA9 A9A

then

AA0 A1B > AA0 A9B

AA1 A0B > AA1 A9B

AA2 A0B > AA2 A9B

and so on through

AA9 A0B > AA9 A9B


After AA9 A9Z would come AA0 B1A

And then after AA9 Z9Z would come AB0 A1A

Bluebird JAN AH1 H4B Prefix A, B Kevin Thomas
Bluebird FEB CK6 G6B Prefix C Kevin Thomas
Bluebird MAR DL5 F9M Prefix D, E Kevin Thomas
Bluebird APR FL4 T4X NEW Prefix F, G Kevin Thomas
Bluebird MAY HL7 A7H Prefix H, J Kevin Thomas
Bluebird JUN KL2 W8C Prefix K, L Kevin Thomas
Bluebird JUL MM1 K9U Prefix M, N Kevin Thomas
Bluebird AUG PM3 S4D NEW Prefix P, R Kevin Thomas
Bluebird SEP SM1 C1M NEW Prefix S, T Kevin Thomas
Bluebird OCT UJ7 Y5W Prefix U, V Kevin Thomas
Bluebird NOV WJ8 J4L Prefix W, X
Kevin Thomas
Bluebird DEC YH2 K9P Prefix Y, Z Kevin Thomas
1998-2008 Passenger 9DF 36L This is the new numbering format following 999 ZZZ on the original series.
Joey Hurd reports 754 AAA as a low on the original series.
758 ZZY is the high on the original series, reported by Matthew Hicks on 2008-03-03.
0AA 89T is the low on the new series, reported by Jesse Wodstrchill on 2009-01-13.
Q, U, and V series skipped. The Y series started to appear fairly early in the X series issue. The interesting thing about the Y and Z series plates is that they do not have the screened sticker boxes at the bottom, but they do have a recessed area in the center of the plate between the numbers and letters, which is where Missouri is now placing month and year stickers. The early X series plates reported so far still have the screened boxes in the lower corners, but Matthew Hicks has reported 422 XTK as the lowest steel plate with the recessed center area so far. He also reports the XLZ series at the highest he has seen in the original format. Eric Sivertsen reported 443 YBP as the lowest Y series plate seen, with no screened boxes, but with the recessed box in the middle. Matthew Hicks reports that the new plates in the Y and Z series with the recessed sticker box in the center are made of steel, but earlier issues of the current base have all been aluminum. Note: Mike Macik reports the XLY, XMN, and XNM series with both the screened sticker boxes and the recessed area in the center. Mike Macik reports that all Y (except for a short run of YZ- series that are steel) and Z series plates are aluminum, and most, if not all, X series plates are aluminum.
Matthew Hicks reports seeing 000 USA in Jefferson City on 2006-10-20, which is odd because the entire U series was skipped. This was not likely a personalized plate because it was embossed and personalized plates are flat. Mike Macik saw 000 AAA, also in embossed form, so chances are both were issued to well-connected people. Also from Mike: Some plates have sticker wells large enough to accommodate an area the size of the month and year stickers, while the majority has an area equal to two month stickers. It is very sporadic, but has been seen in nAB nnW, nBW nnM, and a few other series.
Matthew Hicks
Non-passenger Plates
Truck (JAN) 0AR 201 Robert McClung
Truck (FEB) 0CT 232 Robert McClung
Truck (MAR) 6DV 765 Robert McClung
Truck (APR) 1FX 613 Robert McClung
Truck (MAY) 2HU 662 Robert McClung
Truck (JUN) 0KW 348 Robert McClung
Truck (JUL) 4MV 511 Robert McClung
Truck (AUG) 3PW 291 Robert McClung
Truck (SEP) 4SV 599 Robert McClung
Truck (OCT) 0UU 324 Robert McClung
Truck (NOV) 1WS 754 Robert McClung
Truck (DEC) 4YT 519 Robert McClung
Commercial Trailer 27A 463 Bluebird base, COMM TRL embossed at the bottom
Low - 00A 271 2010-05-15 Kit
Willie C. Brock, Jr.
Dealer D9949-A Kent Dickerson
Handicapped CX 70J New Bluebird base. Handicapped symbol takes the place of what would be the first digit. Willie C. Brock, Jr.
Heavy Truck see notes Heavy Truck 24 - 99A-4ZE
Heavy Truck 36 - 11B-0MS
Local and BL plates do not exist anymore...just the weights, can use the "F" Farm Sticker
Gunther Frostyburger reports 96A-R1C on 2013-06-24.
J.D. Adams
Historic 03532H New base Kent Dickerson
Motorcycle CM 4TV New Bluebird base Willie C. Brock, Jr.
Taxi TX 1233 Flat
Black on Yellow with "checker" stripes on side. This plate only given to St Louis City & County Taxis licensed by the St. Louis Metropolitan Taxicab Commission. The numerical part of the tag matches the actual medallion number of the cab.
Bradley Gallagher
Trailer 37D 9YL Bluebird base with a two-year sticker. Willie C. Brock, Jr.
Truck see notes Starting in 2008 with the Bluebird base, there is just one Light Truck plate that replaces the L & BL 6/9/12 series plates, combines them into one class. The only different designation that can be used on these plates is the addition of an "F" sticker denoting Farm use only. The first alpha denotes the expiration month.
Specialty Plates
Prevent Child Abuse 15AC33 Willie C. Brock, Jr.
Retired Military - Navy F14RO Kent Dickerson
Inactive Series
BL12 Truck (1998 series) 383 XT0 On the 1998 base, this series used T through Z in the second letter of each series, so the progression was AT-AZ, BT-BZ, CT-CZ, etc. (started at 000 AT1 - 999 AT9) The numerical progression was 000 AT1, 000 AT2, etc. up to 999 AT9, then 000 AU1, 000 AU2, etc. Matthew Hicks
BL6 Truck (1998 series) 552 XJ8 On the 1998 base, this series used C through S in the second letter of each series, so the progression was AC-AS, BC-BS, CC-CS, etc. (started 000 AC1 - 999 AC9) Eric Tanner