King 1250 Sousa on the East Coast?

[Udi]

Hey there Tubeneters,

I am visiting the US and I am looking to buy a vintage King 1250 (or even a 1251) sousaphone. If anyone has one they want to sell somewhere in Massachusetts or NY, or some advice, I would love to know.
Looks don't matter much to me, while good mechanical condiotion

If you have a king you don't want to sell but will be willing to let me play for half an hour, I would really appreciate it, as I never played one and want to see how they are before I buy one. I currently play a wonderful 40's Conn 20K, but after a few years of playing it I am worried I won't always be able to carry that beast, and also think a smaller instrument might be more suitable to my lung capacity, as I am not a big fellow.

I hope I can give a happy, busy and varied musical life to the sousaphone I'll find.

Many thanks,
Udi