FHF 73

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11 1/2”’ | Hand Wind | Swiss Lever | Direct Sweeping Seconds |

Remarks:

At 4.05 mm, slightly higher than the FHF 72 at 3.65 mm. Otherwise apparently largely identical
Movement family:
- FHF 73: no date
  There is also a much older FHF 73 with 10 1/2”’!
- FHF 73-2: date (mounted on plate)
- FHF 73-2 N: date (mounted on plate, small modifications)
- FHF 73-4: date (countersunk in plate, small modifications)
- FHF 73-4 N: date (countersunk in plate, small modifications)

Listing ID: 3340
Manufacturer / Brand: FHF
Caliber: 73
Size in French Lignes: 11 1/2'''
Size range mm largest diameter: 22 - 31 mm
Shape: Round
Winding: Manual (Crown)
Hands Setting: Crown
Seconds Hand: Sweeping seconds (central seconds)
Escapement: Lever (Swiss, English, Glashütte)
Date, Day, Month...: None
Jewels: 17
Setting Lever Screw/Pin Position: Left
Balance Position: Bottom (120 - 240°)
Shock Protection: Incabloc
Beats per hour: 18,000
Balance Type: Nickel
Power Reserve: Approx. 42 hours
Production Period: Probably around 1960, because original data sheet from 1959 available
Identification: Dial side marked with FHF 73.
External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-26#post-3632172
Country: Switzerland