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

Remarks:

• Rotor winding in both directions
• A regular 17 jewel AS 1700 serves as base movement. The remaining 83 jewels are located in 42 holes in a ring on the rotor. There are two jewels in every hole except one. The ring is guided in a polished slot in the movement holding ring

• Listing ID: 1312
• Manufacturer / Brand: AS / Waltham
• Caliber: R.310
• Size in French Lignes: 11 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 100
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Incabloc
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: 41 hours
• Production Period: Unknown
• Country: Switzerland
• Identification: Automatic bridge marked Waltham R.310, plate marked AS 1700 (base movement)
• Contributor ©: Uhrforum.de member JackDaniels83
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-55#post-7662050