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Trematic 18k Yellow Gold Moonphase Calendar 1950’s

Price on Request


Trematic Moonphase calendar in yellow gold

Amazing moonphase calendar watch from the 1950’s with an automatic movement. The watch has a beautiful appearance with its 18k yellow gold screw back case, sophisticated dial and hands, the quality of the watch is very good and is not inferior to more commonly known watches from the same era.

The movement running inside this beautiful watch is the automatic felsa bydinator 693 with 25 jewels. It’s case diameter without the crown is 37mm which is large for the 1950’s. The watch has been produced around 1952. This is the only example known  in yellow gold, most often this particular trematic watch is offered in steel. We are happy to offer this rare gold example for a competitive price. Very similar watches are offered by Gübelin in the 1950’s under the name IpsoMatic.

The condition of the watch is good, the case shows signs of usage and has some marks. It has been polished in the past. The dial condition is very good, it has never been restored or cleaned. The movement of the watch is running perfectly on time and is functioning well.

Contact us for any questions about this beautiful moonphase calendar watch from the 1950’sby phone or email


Details Trematic Moonphase

18k Yellow gold case
37mm case (ex. crown)
automatic movement
cal. felsa bydinator 693
25 jewels
circa 1952
6 months guarantee

We ship worldwide with Fedex priority, also its possible to trade in your vintage timepieces. You can contact us by phone, WhatsApp or email ([email protected])

Please don’t hesitate to contact us for more information, offers or high resolution pictures.