This is a super Rare Studebaker 1947-1952 convertible top hinge halve mounting bracket part 287541.  I am not positive but this may be only for 47-49 but not sure, please research for yourself to insure this is what you need.  

Check my other auctions as I'll be listing some other RARE Studebaker convertible top parts.  

See pictures to see what your getting and condition.