WTB: 82939 Serial Interface

[smp]

I am looking to acquire an HP 82939 Serial Interface for my HP-86B. Preferably with the female connector, if possible.

I had one of these, but foolishly traded it away a couple of years ago. Now that I have my HP-86B back out of storage and up & running, I find that the SIO is needed for file transfer into and out of my system.

Please send a PM if you might have one of these available at a reasonable price. I see one available as a bare board on TAS for $249. That is not a reasonable price, IMO.

smp

UPDATE: Here's a question: Will I need any additional ROM beyond the stock HP-86B system to use the Serial Interface? If so, I guess I'll be looking to acquire that, too.