Glycine

Glycine is a Swiss watch brand founded in 1914 by Eugène Meylan, with a production background in Biel/Bienne. The brand describes early specialisation in small movements, including those for ladies' watches. Airman was introduced in 1953 with pilots and multiple time zones in mind.

Airman history is particularly associated with a 24 hour dial and rotating bezel. The model name has subsequently appeared on several versions. Not all Glycine watches, or all Airman variants, have identical displays, movements or operation.

For identification, document the reference, dial scale, number of hands, crown arrangement and movement. Compare these with material from the relevant period. A modern reissue can refer to a historical design without sharing its production date or construction.