The handle on the my cold water faucet stem broke off the other day. I removed it, but I can't find out who made it so i can replace it. Attached are a few pictures of it while still in the wall, and another of the full valve stem from the hot side. The total length is 4 1/2 inches, and the broach is 16 spline. I assume that it is quite old; my house was built in the 30's, but I doubt it is THAT old. No plumbing supply place I have contacted have a clue who made it and if it can even replace it. Any help would be AMAZING.

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