Nice original oil cap used with the factory chrome valve covers such as the Stage 1. $75.00 shipped in the USA.
I checked into them awhile back. The lettering is off by 90 degrees if I remember correctly. Maybe not a big deal for a driver but............
I bought tons of those things off 1984 Buick centuries for a buck a piece. Check junkyards but they are mostly gone now. Thye came with a black decla on the centuries but all you needed to do was peel it off.