From 90's this Concord Mariner sg quartz, very elegant watch in steel and solid gold bezel, flat and recently serviced by watchmaker...

Case:
o   Stainless steel with 14k solid gold bezel with minor marks and scratches ref. 15.61.634.V14 serial 558952
o   Fine condition with strong geometry
o   23mm without crown / 27mm lug to lug  / 4.5mm tickness 
o   Original concord crown
o   Original sapphire crystal 

Movement:
o   Quartz ETA - ESA -  recently serviced by watchmaker
 
Dial & Hands:
    o  Untouched silver & gold in good condition

Bracelet Material: 
  o  In stainless steel & gold with "C" medal 14k solid gold, maximium wrist 16cm = 6.29inches
 
Conclusion / Condition: 
The Concord Watch Company, of Swiss origins was incredibly popular through the 1980s and early 1990s, retailing for more than entry-level Rolexes at one point, yet has since fallen out of favour and this is an elegant piece valued with gold and its build quality comfortable on the wrist.

please see photos as they are part of the description. 
concord velvet storage bag but no pappers, no water proof test, sold as is, any question feel free for ask...