The sought-after Speedmaster ref. 3572.50.00 uses a plexiglass front and a sapphire caseback, displaying the cal. 1863 movement. Case and bracelet are stainless steel.
Movement Type
Manual Chronograph
Caliber
1863Jewels
18
Reserve
48
Frequency
21600
Hands
Small Seconds
Shape
Round
Lug Distance
20.00 mm
Material
Stainless Steel
Glass
Plexi
Diameter
42.00 mm
Water Resistance
50.00 m
Dial Color
Black
