This is a unused crystal. OMEGA Yellow Framed Cushion Lucite CRYSTAL Ref. 166.191/166.189 Cal. 1250.  32mm by 32mm in diameter and 35mm by 35mm from corner-to-corner diameter. 3mm in height.  The Omega Horseshoe Logo is marked centered position on the surface. Genuine, authentic crystal only.  THIS IS A FINE COLLECTIBLE. DON'T INVEST IN THE STOCK MARKET. BUY SOMETHING PROVEN IN TIME. 

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