C. 1947 ROLEX Oyster Perpetual Ref. 5050 9K Rose Gold Bubbleback Watch | eBay
Rolex, Steel Bubble Back, Ref. 5050, circa 1949, Parts Watch. ... | Lot #54327 | Heritage Auctions
Rolex Model 5050 Perpetual Bubble Back Stainless Steel Men's Wristwatch at 1stDibs | rolex 5050, rolex back stainless steel, rolex stainless steel back
Rolex 5050 Oyster Perpetual 10k on strap "BUBBLE BACK" (14099) | European Watch Co.