Rolex, a stainless steel Oyster Junior Sport wristwatch, 1930's,

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Rolex, a stainless steel Oyster Junior Sport wristwatch, 1930's,
silvered dial signed Oyster Junior Sport, Extra Prima, baton markers and Arabic quarters, subsidiary seconds, 15-jewel movement, RWC Ltd, Oyster Watch Co. case with screw down crown and screw back, 30mm.