Glycine watch airman base 22 mystery purist purist 24h version whenever the subject of aviation comes up the name of glycine is mentioned as one of the pioneers of watchmaking for pilots and frequent travellers beginning in 1953 glycine started production of the airman a watch that became legendary for introducing multiple time zone watches to the market since then glycine has developed an unbroken chain of aviation watches ranging from successively more complex world timers to unique c