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

Remarks:

• Movement family:
  • Hand winding
    • Durowe/INT 7410: 10 1/2”’, 17 jewels
    • Durowe/INT 7420: 11 1/2”’, 17 jewels
    • Durowe/INT 7422: 11 1/2”’, 17 jewels, date w/o quick-setting
    • Durowe/INT 7423: 11 1/2”’, 17 jewels, date and day w/o quick-setting
    • Durowe/INT 7425: 11 1/2”’, 17 jewels, date with quick-setting
    • Durowe/INT 7426: 11 1/2”’, 17 jewels, date and day with quick-setting
    • Durowe/INT 7427: 11 1/2”’, 17 jewels, maxi date and day with quick-setting
    • Durowe/INT 7427: 11 1/2”’, 17 jewels, maxi date and day with quick-setting
    • Durowe/INT 7428: 11 1/2”’, 17 jewels, watch calendar with quick-setting
  • Automatic
    • Durowe/INT 7520: 11 1/2”’, 21 jewels
    • Durowe/INT 7522: 11 1/2”’, 21 jewels, date w/o quick-setting
    • Durowe/INT 7523: 11 1/2”’, 21 jewels, date and day w/o quick-setting
    • Durowe/INT 7525: 11 1/2”’, 25 jewels, date with quick-setting
    • Durowe/INT 7526: 11 1/2”’, 25 jewels, date and day with quick-setting
    • Durowe/INT 7527: 11 1/2”’, 25 jewels, maxi date and day with quick-setting
    • Durowe/INT 7528: 11 1/2”’, 25 jewels, watch calendar with quick-setting
• Same movements with suffix /1, /2, /3, /4: newer generations

• Listing ID: 10791
• Manufacturer / Brand: Durowe / INT
• Caliber: 7420
• 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: Rufa Anti-Shock
• Beats per hour: 21,600
• Balance Type: Glucydur
• Power Reserve: Approx. 42 hours
• Production Period: From 1972 onwards
• Identification: Movement marked with INT 7420 under the balance wheel. Listed in the Flume K3 catalog from 1972.
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)