OMEGA, Constellation, "Pie-Pan"

Case size: 34 mm
Material: 18K gold
Movement: manual, caliber 551
Year: circa 1963
Crystal: plastic crystal
Bracelet: original bracelet in 18K gold
Reference number: BA 167.0005
Serial number: 20.641.481
Case number: 167.005-6
Accompanied by: certificate, chronometer certificate, box
Total weight: circa 81 gram

Please keep in mind that an overhaul might be needed, since no service history is available.