ROLEX subcontracted authorized by Rolex in the early 1970s. Solid 18k true yellow solid GOLD 16mm Logo Buckle, center marked: 750 ROLEXSA SWISS*.  Classic early Authentic, original.  Very little sign of use or any distraction.  Like new unworn condition. THIS IS A FINE COLLECTIBLE. DON'T INVEST IN THE STOCK MARKET. BUY SOMETHING PROVEN IN TIME. 

NOTE: We have been selling vintage watches on E-Bay since 1998 as watchco1973 with over 15000 vintage watch sales and 100% positive feedbacks. You can buy from us with confidence. 

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* The term ROLEXSA is not a standard corporate abbreviation, but rather a misinterpretation of Rolex SA, which stands for Rolex Société Anonyme. It is the official name of the Swiss luxury watch company. 

Here is a breakdown of the term:

Therefore, ROLEXSA means Rolex Incorporated.