I have no idea. I don't have a 15 inch head to measure and compare to the stated 15-5/16 inch measurement. And I am not an expert in antique drums. I just know I love it! But it looks to me like, if a 15 inch head would fit, something could be done with snares that would not damage or change the shell as it is designed. Just takes a bit if ingenuity.Wow. What a beauty. Duplex made some cool drums. Is there a reason 15" heads wouldn't fit?
You are right about Duplex drums. They made some really cool stuff. Check out this one with the rims to shell design, tension system inside the shell on the last photo. Really cool.