An 18k Gold case Omega automatic chronometer Constellation, in working order.

An Omega automatic chronometer "Constellation", in working order.Hand setting ok.Winds and runs.case diameter 34mm.Gross weight including strap 59g.An 18k gold case.Fine marks to glass.Lug size 19mm.Working when tested, in good condition.Day and date function ok.Don't know if it has had replacement glass.