Vintage Rolex Oyster Perpetual GP Case & Cream Dial. I assume it’s GP, I can’t see any hallmarks.It says Oyster Perpetual on the dial, the perpetual rotor was invented by Rolex in 1931. It’s used in every automatic movement these days.Not sure which model this is , is called the Bubble Back. I thought it looked like a Small Rose but isn’t that only found in the Rolex Tudor range? No doubt someone out there knows śo I’d be grateful for the input.I was tempted to keep this wat...ch for myself so I had it serviced at Lovedays Jewellers (who have a Rolex- trained watchmaker) for £160), had I sent it to Rolex it would have been £600. So it’s in tip-top condition.It’ll be sent Special Delivery, tho if no idea why ebay don’t have this as an option