60s vintage watch mens omega seamaster de ville 14k usa ref LL 6590-1The Seamaster line has been part of the Omega brand since it first launched in 1948. This watch features a 14k yellow gold case produced by the U. S. based company Ross. In the '60s, it was relatively common for Swiss watchmakers to send movements to the United States and have them fitted with domestically produced cases to minimize import costs. Case: o Solid gold 14k serial 1217430 ref LL 6590 1 made for USA market,polished, lower left lug a little