I have a lovely German Silver, I think, flip top from the side opening rad cap. I would like to identify the make and model. Originally it had the Boyce cover plate as posted above. I've installed a working motometer, not Boyce, with a metal front cover. The backside is printed on yellowish paper. No identification on the Motometer either. I should say on the rad cap wings it had a male threaded pot metal system. I cut that off and retreaded it to fit my '15 McLaughlin, it also fits my '13 Buick. Any thoughts? Both pieces are original finish, unrestored. Gary