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Examples of prefixes used by private printers


No letter prefix:  Bureau of Engraving and Printing (BEP)

Scott 2452, 5 Circus Wagon coil, plate number 1

Note that letter suffixes indicate BEP printings that have gone past 9 plate numbers.  For example, if plate number combinations 1111 through 9999 have been used, the 10th plate is numbered 1111A, the 11th 2222A and so on, with the 19th plate 1111B.

Scott 3031, 1 Kestrel self-adhesive sheet stamp, LL plate numbers 5644A amd 3333B

The BEP suffix A indicates that the yellow 5 is the 16th plate, the red 6 is the 17th plate, and the blue and black 4's are the 15th plates for those colors.

Scott 3031 is the most prolific example of suffixes. It was printed with 11 plate number combinations with no prefix, 15 combinations with suffix A, 9 combinations with suffix B, and a single example with suffix C, plate number 1111C.


A:  American Bank Note Company (ABNC)

Scott 2452Bf, 5 Circus Wagon coil, plate number A3


B:  Banknote Corp. of America (BCA)

Scott 3640, 37 Fire Pumper, plate number B122222

BCA lost its contract to print U.S. stamps and was purchased by Sennett Enterprises in January 2004.  BCA's division of Sennett still prints stamps, but they now use the 'S' Sennett prefix.

IN 2016, starting with the $22.95 Columbia River Gorge express mail stamp, the 'B' prefix was reinstated for some issues.


C:  CCL Industries

Scott 4704a, (49¢) Forever Purple Heart with 2014 date, plate number C111111

In July 2013, CCL Industries purchased the stamp-producing division of Avery Dennison. Stamps printed by CCL have a 'C' prefix. CCL lost the contract in 2015, so usage of the C prefix was quite brief.


D:  Dittler Brothers Incorporated

Scott 2599b, 29 Statue of Liberty self-adhesive booklet stamp, also issued in coil format, plate number D1111


G:  Guilford Gravure, Inc.

Scott 3682, 37 Snowman coil, used, plate number G1111

Guilford printed some coil stamps in 2002.


K:  KCS Industries

Scott 2806a, 29 AIDS Awareness single from booklet pane of 5, plate number K111

Technically, these stamps were printed by Sennett Security Products (see "S" prefix below).  However, Sennett's booklet stamps were were finished into booklets by KCS Industries, so Sennett printed the stamps themselves with a K prefix.


LT, LTB:  Bank Note Company of America, "Road Runner" Looney Tunes stamp

These prefixes were used during the printing of the 33¢ Coyote & Road Runner Looney Tunes souvenir sheets, Scott 3391. They can be seen in the selvage of the uncut press sheets of that printing. Of the five Looney Tunes stamps, this was the only printing done by Bank Note Company of America, and the only one on which prefix LT was used. Plate number LT001 appears in black, light blue and dark red on the front of the press sheet, and LTB001 in black appears on the back.


M:  3M Company

Scott 3132, (25) presorted first class coil, experimental, plate number M11111.  The perforation "holes" on this self-adhesive stamp are actually printed circles.

3M printed some experimental self-adhesive coil stamps in the mid-1990's.


P:  Ashton-Potter America (AP)

Scott 3785, (5) non-profit coil, plate number P1111


S:  Stamp Venturers (SV), also Sennett Security Products (SSP)

Scott 2526, 29 Tulip coil, plate number S2222


T:  Bureau of Engraving and Printing (BEP) test coil

Scott 2115b, 22 Flag over Capitol Test coil, plate number T1

All stamps of the BEP-printed test coil appear with "T" in the bottom center, so "T1" should not be considered a plate number prefix in the same sense as the other letters illustrated here.


U:  United States Bank Note (USBN)

Scott 2618, 29 Love Envelope, plate number U11111 LL


V:  Avery Dennison

Scott 2904A, (5) non-profit coil, plate number V333342


VA:  "Porky Pig" Looney Tunes stamp

Scott 3534 var, 34¢ Porky single from press sheet, plate number VA045 through VA048

The prefix VA was used during the printing of the 34¢ Porky Pig Looney Tunes souvenir sheets, Scott 3534.  They can be seen in the selvage of the uncut press sheets of that printing. 15 plates were used, ranging from VA045 through VA061, skipping 53 and 55.


VO:  "Buggs Bunny," "Sylvester & Tweety" and "Daffy Duck" Looney Tunes stamps

Scott 3306 var, 33 Daffy single from press sheet, plate number VO2708 and VO2610

The prefix VO was used during the printing of the Buggs Bunny (Scott 3137), Sylvester & Tweety (Scott 3204) and Daffy Duck (Scott 3306) Looney Tunes souvenir sheets.  They can be seen in the selvage of the uncut press sheets of those printings.


X:  U.S. Postal Service illustration

When the Postal Service releases images of future stamp issues in press releases or the quarterly philatelic bulletin, the illustrated plate numbers are generally in the format "X11" or "X1111", depending on how many colors are expected to be used in the printing process.  The actual security printer contracted to print the issue, and thus the likely initial plate number, can generally be inferred from other details of the upcoming stamp issue.  Plate numbers prefixed by X do not actually appear on printed U.S. stamps.

Scott 4084t var, mockup of 39 Comics single from USPS publicity image, 39 denomination defaced by USPS, plate number X1111 LR


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This page last updated January 9, 2016.

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