Lemania HS9 however to my mind this

however to my mind this watch belongs on a leather strap

some numbers are bold and colourful

stops and resets the chronograph

stetzcowatches

CS which has and additional feature: a device to stop the mechanism when the winding crown is pulled out

Lemania HS9 however to my mind thisThis is a Royal Navy issued single button Lemania chronograph, these watches were first ordered by the Navy for pilots and navigators in the late 1940s and Lemania continued supplying them until the early 1960s. The watch evolved over the years, but this watch is part of the first style. There was a later modification to the case back and also a further change to the case, these are referred to as Series I, II and III, this is a Series I The single