Thanks OF for the space, for sale today is an ZENITH chronograph Ref. GH 171 - According to Zenith only 4800 examples were made in the 1960s.
- Case: Signed 18K solid gold 3 pieces case.
- Crown: Original chronograph buttons & later replacement signed crown.
- Crystal: Hesalite crystal.
- Movement: Zenith calibre 146D.
- Dial: Original dial with applied markers.
- Hands: Original hand set.
- Dimension: Approx. 35 mm across without crown - 42.5 mm lug to lug - 18 mm lug width.
- Strap: New hand-made ostrich leather strap & Generic gold plated buckle.
- Serviced history: Recently overhauled by my watchmaker.

Price: Withdrawn.
Shipping: Free insured courier shipping (UPS - DHL - TNT) worldwide.
Return Policy: 14 days, no question asked.
Reference: https://omegaforums.net/search/8419091/?q=No Mercy&o=date&c[node]=10

Please click on photo to enlarge:

 

Where did you get that info from, 4800 pieces?

 

From here: https://www.watchprosite.com/zenith...-vintage-wrist-watches-/1123.1175181.9338086/

 

Bump ^_^