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BALTO Codes - Massachusetts
Baltimore Enamel manufactured Massachusetts Auto Register porcelains from 1903
through 1907.  The 1903 plates were unmarked, but most of the remainder bore the
distinctive hand-painted code of BALTO.  In fact, there are no less than 29 different
BALTO codes known on the reverse of first-issue Massachusetts porcelains -
about the same number of different codes as can be found on Connecticut
porcelains.  In all, there were some 27,000 pairs of passenger plates, 550 sets of
dealers, and 500 motorcycle plates produced - nearly 60,000 porcelain plates in all.  
The first 1,000 1909 plates also bore a "108" BALTO code on the reverse.

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A Website for Porcelain License Plate Collectors & Enthusiasts


Verified numbers produced in this batch:
Replacement Dealer Plate #02





FEBRUARY, 1904





AUGUST, 1906





JULY, 1906





APRIL, 1906





MARCH, 1906





JUNE, 1905





MAY, 1905





APRIL, 1905





OCTOBER, 1904





SEPTEMBER, 1904





AUGUST, 1904





JULY, 1904





JUNE, 1904


Verified numbers produced in this batch:
Passenger Plates #16557 - #17923


Verified numbers produced in this batch:
Passenger Plates #16040 - #16423
Replacement Plate #7966


Verified numbers produced in this batch:
Passenger Plates #13001 - #15806
Dealer Plates #0322 - #0359


Verified numbers produced in this batch:
Passenger Plates #12088 - #12838


Verified numbers produced in this batch:
Passenger Plates #10308 - #11814


Verified numbers produced in this batch:
Passenger Plates #10087 - #10305


Verified numbers produced in this batch:
Passenger Plates #9011 - #9897


Verified numbers produced in this batch:
Replacement Plates #8694, #8719, #8720, #8836, #8907, #8941


Verified numbers produced in this batch:
Passenger Plates #7204 - #8997


Verified numbers produced in this batch:
Passenger Plates #6524 - #7022

Verified numbers produced in this batch:
Passenger Plates #6216 - #6458
Replacement Plates #5630, 5929


Verified numbers produced in this batch:
Passenger Plates #5012 - #6150





SEPTEMBER, 1906


Verified numbers produced in this batch:
Replacement Plates #10311, #17448, #17473
Dealer Plates #0401 - #0408





OCTOBER, 1908


Verified numbers produced in this batch:
1909 Passenger Plates #5 - #890





MAY, 1908


Verified numbers produced in this batch:
1908 Passenger Plate #4924





OCTOBER, 1907


Verified numbers produced in this batch:
Passenger Plates #23389 - #23867
Replacement Plate #9738





SEPTEMBER, 1907


Verified numbers produced in this batch:
Passenger Plates #23100 - #23324





AUGUST, 1907


Verified numbers produced in this batch:
Passenger Plates #22535 - #22777
Replacement Plate #22160





MAY, 1907

Verified numbers produced in this batch:
Passenger Plates #21370 - #21637
Replacement Plate #20954
Dealer Plates #0462 - #0491





APRIL, 1907


Verified numbers produced in this batch:
Passenger Plates #20603 - #21259





FEBRUARY, 1907


Verified numbers produced in this batch:
Passenger Plates #19913 - #20385





JANUARY, 1907


Verified numbers produced in this batch:
Passenger Plates #18359 - #19813





OCTOBER, 1906


Verified numbers produced in this batch:
Replacement Plate #12852
"106"





APRIL, 1906


Verified numbers produced in this batch:
Dealer Plates #0389 - #0400
All separate letter dealer attachments





FEBRUARY, 1906


Verified numbers produced in this batch:
Dealer Plates #0150 - #0302





DECEMBER, 1906


Verified numbers produced in this batch:
Passenger Plate #18093





JULY, 1907


Verified numbers produced in this batch:
Passenger Plate #22272





SEPTEMBER, 1905


Verified numbers produced in this batch:
Replacement Plate #2035