This is one-of-a-kind! Here is a fantastic snare drum that comes from the collection of Chet Falzerano, who is the world's leading expert on Billy Gladstone. This drum was made for Chet by the late Arnie Lang (who, prior to his passing, was second only to Chet in terms of his knowledge of Gladstone). This drum is extremely unique in so many ways, as Chet's note below confirms:

5.5 x 14 Lang Gladstone 3 way tuning Custom Made Snare Drum