At one time I owned an extensive Rollei 6008 camera system. Most of it is now gone but I do still have some *very* desirable and uncommon accessories that I would like to sell.
First is the amazing Rollei ET 22-68 Variable Extension Tube:
The tube mounts between the camera body and lens. Turning the heavily damped outer ring allows extension to be varied between 22mm and 68mm. Electronic coupling is, of course, maintained.
The tube is boxed and in mint condition. I am the original owner and, frankly, don't remember ever actually using this accessory!
$700, shipped and Paypal'ed. CONUS only, Please.