All Mark XI watches were subjected to rigorous testing in the chronometer workshop of the Royal Greenwich Observatory in Herstmonceux.
The civil Mark XI is extremely rare and we have a "CERTIFICATE OF AUTHENTICY" by IWC Schaffhausen from the 13th of September 2023 !
Extremely rare civilian IWC Mark XI from 1975
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DESCRIPTION
Very rare civilian IWC Mark XI
CASE
36 mm stainless steel antimagnetic case with screwed back
DIAL
black with Arabic numerals and central second
MOVEMENT
legendary IWC cal. 89
CONDITION
Very rare perfect & original condition!
YEAR
1975
