13”’ | Automatic | Swiss Lever | Direct Sweeping Seconds | Date |

Remarks:

• Automatic with bidirectional winding
• Direct sweeping seconds with hacking
• Date with quick setting
• Family family:
  • 36,000 bph: (11 1/2”’ / 13”’)
    • 1511 / 1512 – Automatic
    • 1521 / 1522- Automatic, date
    • 1523 / 1524 – Automatic, date, day
  • 21,600 bph: (11 1/2”’ / 13”’)
    • 1531 / 1532 – Automatic
    • 1541 / 1542 – Automatic, date
    • 1543 / 1544 – Automatic, date, day

• Listing ID: 3505
• Manufacturer / Brand: Eterna
• Caliber: 1522(K)
• Size in French Lignes: 13'''
• 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...: Date
• Jewels: 21
• Setting Lever Screw/Pin Position: Left
• Balance Position: Right (0 - 120°)
• Shock Protection: KIF Ultraflex
• Beats per hour: 36,000
• Balance Type: Glucydur?
• Power Reserve: Unknown
• Production Period: Around 1970
• Identification: Marked with K 1522 next to balance, Eterna on rotor, parts lists from Eterna.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-24#post-3438618
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)