A customer sent us this photo. It is the first time I’ve seen a double imprint of the vintage Revere Ware process patent stamp on the bottom of a piece of cookware.
Update 6/20/16: We’ve since seen some auctions for double-struck stamp pieces. This seems to indicate the value for pieces like this is relatively low, at least in the eyes of the sellers. These pieces tend to list for about that much even without the double-struck stamp.