Here's a gorgeous solid 18k yellow gold, 1966 vintage Omega Constellation chronometer, calendar, automatic with near-mint original dial and original hands.

I will consider trades against an IWC small Portugueser with cash adjustment or sell outright.

Here's the details on this superb chronometer -
Movement is a 24 jewel chronometer automatic movement is calibre 561, adjusted to 5 positions and temperature and is chronometer rated; the movement is guaranteed for 12 months from date of purchase, subject to normal fair wear.
The solid 18k yellow gold screw back case is in excellent condition with typical minor wear, and the stars on the Observatory logo are still shining! The screw down case back is hallmarked 18k gold and signed Omega with all reference numbers.
This superb solid 18k gold Omega Constellation is quintuple-signed and is guaranteed all original.
Your satisfaction is paramount and should you not be totally satisfied with your purchase then I would be happy to refund your payment less postage /insurance costs, providing the watch is returned, within 7 days, and received back in the same condition as at time of despatch.
The purchase price is very reasonable £1200 for this superb quality 18ct gold watch from Omega, payable in GBP by bankers draft ( for overseas buyer) or if within the UK, by personal cheque. Watch will be despatched within 24hrs of funds clearing. All delivery / insurance charges are at the buyer’s expense. Insurance is obligatory and is roughly £12 depending on final destination.
Please e-mail me with any questions you may have. The watch is on offer elsewhere so I reserve the right to withdraw this offer.