Air cleaner ID

I got this as part of a parts lot and have no idea what it's off of. The carb inlet measures 4 1/4" in diameter, the top is about 11" in diameter. Blank wrinkle finish, doesn't appear to have any number stamped on it. Came with some big block, mid 60's B body stuff but that might not mean anything at all. Thanks for the help!

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I’ve seen a few of those, early afb carb but it’s possible someone painted it black but that seams exactly like my 273 commando with the exception of the finish. Is it for sale?

Jake