For sale is a very nice Omega Constellation Chronometer Date. Reference: 168.017. Case: 34mm. Serial: 26.8m so +/-1968. Comes on a brand new strap. No known servicehistory but runs nice. Movement: automatic Omega 564 with quickset date. Asking: EUR 500 I live in the Netherlands and will ship pretty much everywhere. Paypal or bank. Dozens of positive feedback.