Extremely rare Longines “Tre Tacche” chrono reference 4974 from 1940’s.
Stainless steel step case,screw case back,manual winding movement cal 13ZN.
Superlative black dial customized by”Mobec”.
Mobec was Longines’s Swiss (Zurich) retailer.
Vintage leather strap.
The watch comes accompanied by original Extract from the Archives Longines.
