tdn.dk
457
Omega Naïad "Medicus"
This has just arrived.
Omega's first "standard" waterproof watch. Gasket in the back and a cork gasket in the crown tube. Their first center second movement cal. 23.4 SC, called Medicus because doctors could measure the time
accurate with the large second hand

This one is a first generation Naïad ref. 2064 from 1938.
These lovely adds has credit to Tire-comedon, omegaforums
A 1939 catalog:
And a Swedish 1937 advertising :
This message has been edited by tdn.dk on 2015-12-17 13:30:27