This is an incredibly uncommon late-series 5004 model, crafted with a platinum housing and a unique blue dial that incorporates a Roman numeral 12 and a tachymeter scale.
Movement Type
Manual Chronograph
Caliber
CHR 27-70 QJewels
28
Reserve
60
Frequency
18000
Hands
Small Seconds
Material
Platinum
Glass
Sapphire
Diameter
36.70 mm
Dial Color
Blue