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BALTO Codes - Connecticut
From 1905 through 1909, The Baltimore Enamel & Novelty Company held the
contract to supply first issue Connecticut plates.  During this span, BALTO is known
to have manufactured at least 23 different batches, ultimately producing about
9,500 pairs of passenger plates and a few thousand dealer and operator plates.  
Below is an accounting of all known BALTO codes on first-issue Connecticut
porcelains.  Beginning around plate #8600, the hand-written coding gave way to
Baltimore's oval maker's mark.

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Verified numbers produced in this batch:
Passenger Plates #35 - #1856





AUGUST, 1905





MARCH, 1909





AUGUST, 1908





APRIL, 1908





OCTOBER, 1907





SEPTEMBER, 1907





AUGUST, 1907





MAY, 1907





MARCH, 1907





OCTOBER, 1906





JUNE, 1906





APRIL, 1906





OCTOBER, 1905





SEPTEMBER, 1905


Verified numbers produced in this batch:
Re-Issue or Replacement Plates #76, #1667


Verified numbers produced in this batch:
Re-Issue or Replacement Plates #352, #831, #1290


Verified numbers produced in this batch:
Passenger Plates #6780 - #7402


Verified numbers produced in this batch:
Passenger Plate #6223 - #6404


Verified numbers produced in this batch:
Passenger Plates #5654 - #6044


Verified numbers produced in this batch:
Passenger plate #4900
Replacement Plate #3405


Verified numbers produced in this batch:
Passenger Plate #4577 - #4804


Verified numbers produced in this batch:
Passenger Plates #4384 - #4575


Verified numbers produced in this batch:
Passenger Plates #4020 - #4084


Verified numbers produced in this batch:
Passenger Plates #3068 - 3374


Verified numbers produced in this batch:
Passenger Plates #2681 - #2823
Replacement plate #24


Verified numbers produced in this batch:
Passenger Plates #1905 - #2223


Verified numbers produced in this batch:
Replacement Plate #236





JUNE, 1907





MARCH, 1908


Verified numbers produced in this batch:
Re-Issue or Replacement Plates #4725, #4800, #5063, #5387


Verified numbers produced in this batch:
Re-Issue or Replacement Plates #3319, #3435





MAY, 1909


Verified numbers produced in this batch:
Passenger Plates #7852 - #7997
"66"
"37"
"106"


Verified numbers produced in this batch:
Passenger Plate #5457





JULY, 1907





MARCH, 1906


Verified numbers produced in this batch:
Passenger Plate #2429
Replacement plate #101





APRIL, 1906





JULY, 1908


Verified numbers produced in this batch:
Re-Issue or Replacement Plates #2676, #3201





JANUARY, 1907


Verified numbers produced in this batch:
Dealer Plate #C175D
"17"





SEPTEMBER, 1906


Verified numbers produced in this batch:
Passenger Plate #3855





DECEMBER, 1907


Verified numbers produced in this batch:
Passenger Plate #7669