13.75" vintage drum? I prefer calf skins. I know that's SO close to the 13 7/8" Keller size, but the single flanged hoops require an EXACT fit. I either need to buy some from somebody, or have them made.

And yes, I have had calfskin heads made at Stern Tanning and I know I can also have them made at Reabeats. They're usually $60 - $70 per head - just trying to save some $$ by findin some already existing ones.