This sale is for a possibly unused and mint condition Mamiya RB67 Polaroid P Adapter. The light seals have just been replaced so no problems with this one.
This adapter allows you to use a mark 1 or mark 2 Polaroid back on your Mamiya RB67 Pro, ProS and ProSD cameras.
The latest mark 3 Polaroid back has a built-in back adapter, but you need this P adapter with all of the other RB67 Polaroids. Also used in combination with a M adapter for fitting Mamiya Press and some Graflock backs to your RB67.