Vintage watch dress elegant Diamond Nivada ref. 21724 Thin

Case:
o   Ref 21724 BM in good condition, minor marks
o   Fine condition with strong geometry
o   29.5mm without crown / 30mm lug to lug  / 5.6mm thickness 
o   Original crown 
o   Original crystal with some scratches

Movement:
o   Quartz movement  -  serviced by watchmaker on March 2025
 
 
Dial & Hands:
    o  Untouched black tapestry dial. Diamond markers 

Bracelet Material: 
  o  Original integrated bracelet, adjustable
 
Conclusion / Condition: 
A very elegant watch and rare, hard to find.

please see photos as they are part of the description.
No box or pappers, no water proof test, sold as is, any question feel free for ask...
Keep in mind that it is a vintage watch, it is normal to be 1/2 minute early or late
wrist-treasure