Σ40
Ref. 4520-8020
A historically important and well-preserved yellow gold cushion-shaped observatory chronometer wristwatch with center seconds
Circa 1970
36mm diameter
Dial, movement and buckle signed
Estimate
HK$160,000 - 310,000
€18,800-36,500
$20,500-39,700
Sold for HK$444,500