Rolex, Oyster Perpetual, Officially Certified Chronometer, BUBBLE BACK, Ref. 2940. Fine, tonneau-shaped, center seconds, self-winding, water resistant, stainless steel and yellow gold wristwatch with original buckle. Made in the 1940's. - Auction
Rolex BubbleBack 6085, coleccionistas vintage, alrededor de 1951 | eBay