1918 Rolex Semi-Hermetic Pre-Oyster Vintage Mens 9K Gold Watch - Very Rare Sapphire Omega only ever produced 3

Omega only ever produced 3

539 "Armadillo" Calatrava

Presents as like new on the wrist

Dial: Signed Zodiac Sea Wolf

For the finishing touch it comes equipped with a period correct Rolex leather strap making it ready for immediate enjoyment

1918 Rolex Semi-Hermetic Pre-Oyster Vintage Mens 9K Gold Watch - Very Rare Sapphire Omega only ever produced 3Without question one of the company's greatest contributions to horology is in the area of waterproof cases. The Rolex Oyster case birthed the idea of the modern sport watch as we know it and was a key catalyst for the initial widespread acceptance of the wristwatch. But before there could be a full hermetically sealed watch, like the Oyster, there had to be a semi hermetically sealed one, like this watch. While many collectors know that Rolex birthed