Post the total length. But, I flipped through every page of my 1989 Crest/Good faucet stem I.D. guide and didn't spot it.
Strip the valve w/o extra packing and is that a loose brass washer?
I know, since it appears rare, you won't find a replacement.
Ragnar at the Sink Factory in Berkeley can machine you a new one to match. But, really, why through good money after such s--t?