Lemania - HS9 A Fine and Rare Stainless Steel Military Chronograph with Signed Caseback Diving Watches ‘SLIDE – DO NOT LIFT’

‘SLIDE – DO NOT LIFT’ says the written of the crown

This A3648 extremely rare model

making it the very first El Primero Chronograph

The Lemania 15 CHT movement is fitted with a self-compensating Breguet hairspring

It was early to mid 1940s when the British Ministry of Defense (MoD)

Lemania - HS9 A Fine and Rare Stainless Steel Military Chronograph with Signed Caseback Diving Watches ‘SLIDE – DO NOT LIFT’The present Lemania HS9 is a milestone of the Military Assigned Chronographs and offers an exquisite opportunity for watch collectors to acquire a piece of excellence and history. The HS \9 on the caseback stays for "Hydrographic Service" and the "9" indicating it is a chronograph. The Lemania 15 CHT movement is fitted with a self compensating Breguet hairspring, column wheel chronograph mechanism and 17 jewels. The Monopusher (the single button at 2