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Hello everyone! I just picked up a peculiar York tuba today. It's a BBb with a .750 bore. Definitely looks to be a large 4/4 in size. Also, the receiver seems to be bigger than standard. I believe this rules it out from being a model 33. Any help in figuring out what model it is would be greatly appreciated! I plan on removing the 4th valve tubing and bottom bow for dent work and then putting it up for sale. It definitely has a York sound even with a few air leaks around the bottom bow!

https://www.dropbox.com/sh/dx97fvmlw98b ... LLESa?dl=0

If the picture isn't clear enough, the serial number is 105176

Does it have a 19 1/2" bell or a 20" bell?

18 inch bell! I believe this is a 700 with a 4th valve.