Silver Airship badge

[bill badger]

Hello,

I am uploading pictures of a silver US airship badge from my collection. The wings are 1.5 inches long and are of the pin back and rolling clasp design although the actual pin is missing. The badge seems heavy for its size.

The ones I have seen online have 'sterling' stamped on the reverse whereas mine does not. However I believe that there were examples made by other manufacturers that were possibly not marked sterling. Can anyone tell me if this is an original 1930's piece or a later restrike?

It is widely believed that there were only around 70 US Army airship pilots in total.

Many thanks as ever,
Bill