Rythmos / Blum Frères Model No. 1 1915 Savonnette

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10 3/4”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

Blum Frères registered movements as Model No. 1 as early as 1911 and again in 1914, which was absolutely unusual. The three Model No. 1 movements have slightly different bridge shapes.

Listing ID: 875
Manufacturer / Brand: Rythmos / Blum Frères
Caliber: Model No. 1 1915 Savonnette
Size in French Lignes: 10 3/4'''
Size range mm largest diameter: 22 - 31 mm
Shape: Round
Winding: Manual (Crown)
Hands Setting: Crown
Seconds Hand: None
Escapement: Lever (Swiss, English, Glashütte)
Date, Day, Month...: None
Jewels: 15
Setting Lever Screw/Pin Position: Left
Balance Position: Bottom (120 - 240°)
Shock Protection: None
Beats per hour: 18,000
Balance Type: Monometallic screw balance
Power Reserve: Unknown
Production Period: Around 1915
Identification: Blum Frères registered the Lépine (open face) version of the movement as Model No. 1 in the Swiss Official Gazette of Commerce on September 11, 1915. Model No. 1 is not an official caliber designation, but was used to register the design.
External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-52#post-7088828
Country: Switzerland