I have three stereo items up for sale/auction on eBay, two of which are medium format. I have a ready-to-use Sputnik and a flash bracket that I made for it over 10 years ago.

For the Sputnik, I have a 30 day return policy on it so that the winning bidder can put have time to shoot with it and evaluate the results. In addition to that for those here in MF3D group, I'll fix it or replace it if something goes wrong with it in the first six months.

I made a flash bracket years ago for it when I was doing a lot of shots that required a flash. The bracket holds two flashes which I wired together. The two flashes on each side balance out the shadows and completely eliminate the shadows that would be created by a single flash. It is admittedly jerry-rigged as it was designed on the fly, but it's pretty solid and does its job well.

https://www.ebay.com/itm/173250326849?ssPageName=STRK:MESCX:IT&_trksid=p3984.m1554.l2649

https://www.ebay.com/itm/173250378522?ssPageName=STRK:MESCX:IT&_trksid=p3984.m1554.l2649

https://www.ebay.com/itm/173246567455?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649