Originally posted by carbking:
"Workmaster - the 603 is a "code" number. Carter knew that the commercial rebuilders would throw away the tags, and stamped their carburetors with a code. The code list was given to the Carter distributors. 603 means 684s."
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I have the same carb. Carbking helped me identify it as a Carter W-1 manufactured for 1949. It is a unique entity within the Carter W-1 line. Try the search function for more info. Hope this helps.
