This tachometer came from an MGB or an MG Midget. It's the small size, used from 1968 through 1976 in US-market MGBs and 1968 through 1979 in MG Midgets and Austin-Healey Sprites.
It is in good cosmetic condition and the needle moves freely, but it has not been tested. If it doesn't work, return it for a full refund.