omega 711 v 712

Bayman · Oct 1, 2021

Hi my first post here so hold that thought.... Right so the 712 is the chrono version of the 711, but what is the actual difference? I am really enjoying working through the fakes threads - very helpful. In fact very helpful on fleabay, many thanks.

Sherbie · Oct 2, 2021

If I follow you, the ultra thin cal 712 has been adjusted to run accurately to COSC specs over 5 different positions and temperatures.the 711 was only adjusted to 2 positions

see this essay on Desmonds site

http://download1076.mediafire.com/8g586p0u53qg/f2wh10fa1rtxe85/Omega Constellation UltraThins of the Sixties and Seventies_June2013.pdf

Bayman · Oct 2, 2021

Brilliant and comprehensive answer Thank You. I suspected there was no physical or mechanical difference, so it does come down to setting and testing 😀
The pdf is an excellent read too!

omega 711 v 712

Bayman

Sherbie

Bayman

Similar threads

Omega 712 dial ,What case?

Omega Constellation 711 vintage 18k help

[REDUCED] 1968 Omega Constellation ref. 157.0001 w/ Cal. 712 - Blue textured dial, original mesh bracelet, boxes

1968 Omega Constellation Ref. 157.0001 - Ultra-Thin Cal. 712 Chronometer - Blue Textured Dial - Omega Mesh Bracelet

1972 Omega Speedmaster 145022-71 Purchase Advice

1968 Omega Constellation ref. 167.021 Ultrathin Cal. 712 - Gold capped case with matching bracelet - Serviced