Before I put it up on Ebay, I have a vintage Calypso J First Stage and Calypso IV 2nd stage for sale. I disassembled and removed all the old dry rotted Orings so it is just for parts. If you have all the soft parts, there is no reason why you could not make this a working regulator. It is in excellent condition with no missing brass or obvious corrosion. I will throw in a brand new (old stock and still in packageing) J Valve rebuild kit for the Calypso regulator. Asking $30 plus $12 for shipping. PM me if interested.
Myles
Myles