via this auction
"This is a very rare Sequential Circuits Model 700 Programmer designed to work in tandem with synths like Arp 2600s, Minimoogs (with CV) and other analog synths that didn't have the ability to store patches to have some of that capability. It includes a lot of great on board features. This particular unit still has the box and was barely used making it very close to new for such a vintage piece from the late 70s! Here's more info: RARE SEQUENTIAL CIRCUITS 700 SYNTHESIZER MEMORY / PROGRAMMER This vintage analog synth programmer was designed and developed by Dave Smith, founder of Sequential Circuits back in the later part of the 1970's. This particular unit was used on a Mini-Moog to assist in live performances and offered extremely swift and accurate recalls of analog synthesizer parameters. Overall, I'd say that this unit ranks a 7 out of 10 due to some of the lettering has worn off the front panel, there's a few light scratches, and there is a small amount tape residue on the top of the real panel [see photos]. Unfortunately I was unable to test it but was working fine and trouble-free when it put in storage - a bedroom closet - about 10 or so years ago so I can not say if it's working or not [However, When last used, it offered smooth, easy and trouble-free operation]. The unit powers up and the red LED display is strong & bright and the unit steps through the bank & program numbers like it's supposed to. It has the original, knobs, pots, switches and lighted push-buttons - All in working condition with a nice, rugged feel. Serial number is which I believe indicates that this unit was one of the first ever produced of the 700 series. I have recently been told that only 25 of these units were made so here's your chance to own a piece of Sequential Circuits early history. Below is a brief description and info I found on-line 
