Eberhard & Co. - Chronograph Moon Phase 18k gold 38mm

Eberhard. An 18K gold manual wind calendar chronograph wristwatch with moon phase
Date: Circa 1970
Movement: Valjoux 7751, 17-jewel manual wind
Dial: White, applied gilt Roman numerals, outer minute track with 1/5th second division and calendar markers, subsidiary dials at 6, 9 and 12 for moon phase, seconds, 30 minute and 24 hour recording, date and day apertures, gilt baton hands, centre chronograph hand, crescent tipped calendar hand
Case: 18k gold case, polished round, hinged back, crown flanked by twin buttons
Strap/Bracelet: Brown leather original strap
Buckle/Clasp: Associated gilt buckle and optionally an 18k clasp
Signed: Dial
Size: 38mm

Total weight of the watch is a bit over 72 grams and I have a spare strap that it was used with the watch before and it weights 8.91 grams.