Doing some spring cleaning, I found several items for Mamiya RB-67 cameras, none of which I need as I no longer own an RB.
1) Pro-S 120 film insert only (no shell), very worn, needs light seals, but it does advance. $10 plus shipping.
1) Pro-S locking dark slide, a little worn but it is intact, not bent; it should do what a dark slide is supposed to do! $5 plus shipping.
1) Revolving back adapter, worn, needs new seals but is functional, not sure if it's Pro or Pro-S. $15 plus shipping.
Or, buy the lot for $25 US, plus shipping. I prefer to sell within the continental US. I do take PayPal, or you can send cash, check, or money order as you prefer. I've tried to describe these accurately, but I'll send pictures on request.