Up for sale is my Longines Ultrachron solid yellow gold calibre 431. Details: Case: 18k solid yellow gold national production case. 34mm without crown, 40mm lug to lug. Various light scratches and marks consistent with age and use. Looks unpolished, with facets still clear on case and lugs + awesome original brushing on bezel. Crown is signed Longines. Fantastic caseback only found on such Spanish cased Longines! Dial: some marks around the top circumference and light patina, please see pictures for the condition. Movement: Cal 431 that's working fine. I'm not aware of its service history and have not had it serviced. According to Longines Archival service, the movement was invoiced to Longines' Spanish agent back in Jan 1971. Please do click on the photos for the full high resolution. Looking for the equivalent of USD900 USD700 nett to me. Bank transfer preferred, can do Paypal (we split 4.5% fees) for OF regulars. Watch will be shipped from Singapore, free registered airmail shipping included in price. Other shipping options can be discussed and at buyer's cost. I've bought/sold several high value watches from OFers over the past year and can provide references if required. Thanks for looking!