Al - from these numbers, we can tell that you have a 1966 casting. The casting was machined a dozen different ways, to be used on a number of different engines, including the 1966 Pontiac 230 CID OHC Sprint.

The original tag was round about the size of a dime, and pressed into a depression on the throttle linkage size of the bowl (center section).

The 1966 was the worst of the Q-Jets used by Pontiac, as these still had the funky internal dashpot that would bind after it acquired some wear; and the still funkier "umbrella" fuel valve that didn't work. Any good carburetor rebuilder will replace this valve with a conventional style when rebuilding the carburetor.

There are no other identifying numbers on this carburetor, if the tag has been removed. To positively identify it, one first looks at the throttle arm (the Pontiacs differ from the others); and then disassemble the carb and check the airbleeds, restrictors, etc. and compare these calibrations to the calibrations for the various units.

Sorry to be the bearer of bad news.

Jon.