Manufacturer: Eberhard
Model: Contograf
Reference: 31506/351
Functions: date - chronograph - small running second - hour and minute - pulse analyzer - tachymeter - quickset date - 30 minutes counter - screwed-on caseback
Material: Stainless steel
Dial: blue
Watch glass: acrylic crystal
Bracelet: stainless steel
Type of clasp: deployant buckle
Diameter: 37mm
Caliber name: Eberhard 310-82
Movement type: manual wound
Year of Manufacture: 1970
Overall condition: 9 - has rarely been worn - top condition
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