Holley Carb Ink Stamp decode

[John Brown]

Originally Posted by BCreekDave

Could be a case where there isn't a box? If its an assembly line only item, how would there be a box? Maybe they "walked" out the door back then?
But I agree, I would need some kind of origination evidence or something before spending that kind of money.

Back to the original topic and again sorry for the hijack, but Steve did you come to any conclusions about the ink stamps?

Pictures of similar plugs at http://www.1970z28camaro.com/engine/ along with pictures of carb stamps.