Contax 645 stuff:

3 sets of Film Back Holder (MFB-1) with 120/220 Film Insert (MFB-1A). Some have boxes, back holders have their caps, inserts w/o plastic case (unless they turn up), very little use. $299 each /obo.
2 220 Film Vacuum Insert (MFB-1B). No boxes, but have their plastic cases, very little use. $250 each /obo.

1 13mm Auto extension tube, barely used. Caps, warranty card, box. $250/obo
1 26mm Auto extension tube, barely used. Cap, box. $250/obo
1 52mm Auto extension tube, barely used. Cap, papers, box. $250/obo

1 Battery Holder/Grip (MP-1), never used (even has the original batteries), leather strap, warranty card, instruction sheet, box. $449/obo

also optional focusing screens MFS-1 and MFS-3, like new (barely used, if ever), box, etc. $150 each

contact me by e-mail if you are interested.
Thanks.