The picture shows three views of this Custom Made 1936 United States Navy Ring. This pre World War II ring is nicely designed but has no makers mark. It appears to have been specially made for the original owner. It may be made of silver but has not been tested. It is marked as follows:
CBM 1936 USN
To judge the size the face of the ring measures 3/4" tall. We are not sure what size it is but the inside dimension is 3/4" wide. It is in exellent condition with some smooth wear on the date side from being worn.