Classic 1971 Omega Constellation Automatic Chronometer Officially Certified wristwatch. Original stainless steel case #166.059-168.047. ( some of the case screw do show wear). Original Omega stainless steel band. Original silver tone dial with steel and black markers. The dial does have some ageing. Original plastic crystal and crown. Automatic Swiss made 20 ruby jewel movement caliber 1001. Adjusted to 5 positions and temp. Serial# 33129819. Serviced with one year warranty.