A. Montandon, Le Locle Calibers

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A. Montandon, Le Locle was a Swiss watch établisseur or small maker operating in Le Locle (canton of Neuchâtel) during the second half of the 19th century. The initial "A." most likely refers to Alphonse Montandon; the Montandon name was shared by numerous independent watchmakers and ateliers across the Swiss Jura, with Montandon Frères being the most prominent, active in Le Locle from around 1850 to approximately 1903.

The sole documented caliber is a 16-ligne pocket watch movement, typical of Swiss mid-grade production for the export market of the era. Movements signed by Le Locle établisseurs of this period often used ebauches sourced from Fontainemelon or local suppliers, finished and cased locally. Documentation on this specific maker is sparse; collectors should treat attributions to "A. Montandon" with caution given the prevalence of the surname in the region.

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Manufacturer Movement
A. Montandon 16" A. Montandon 16"
A. Montandon, Le Locle Manual 36.09 mm