70's vintage watch mens Lanco chronograph valjoux 7733 MINT rare blue dial

From 70's this gorgeous Lanco chronograph two tone blue dial in really good condition...

Case:
o  Metal chromed and stainless steel back in great conditon, minor marks, ref. 910 2 
o  Fine condition with strong geometry
o  37mm without crown / 40mm lug to lug  / 12mm tickness /  19mm lug width
o  Original plexiglass 
o  Original crown

Movement:
o    Mechanical manual wind Valjoux 7733 - working well

 
Dial & Hands:
    o Untouched two tone blue

Bracelet Material: 
  o New 20mm light brown leather vintage look with stainless steel buckle
 
Conclusion / Condition: 
A rare piece in rare condition

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...