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

Remarks:

• Movement family:
  • Hand winding
    • Durowe/INT 7410/3: 10 1/2”’, 17 jewels
    • Durowe/INT 7420/3: 11 1/2”’, 17 jewels
    • Durowe/INT 7422/3: 11 1/2”’, 17 jewels, date w/o quick-setting
    • Durowe/INT 7423/3: 11 1/2”’, 17 jewels, date and day w/o quick-setting
    • Durowe/INT 7425/3: 11 1/2”’, 17 jewels, date with quick-setting
    • Durowe/INT 7426/3: 11 1/2”’, 17 jewels, date and day with quick-setting
    • Durowe/INT 7427/3: 11 1/2”’, 17 jewels, maxi date and day with quick-setting
    • Durowe/INT 7428/3: 11 1/2”’, 17 jewels, watch calendar with quick-setting
  • Automatic
    • Durowe/INT 7520/3: 11 1/2”’, 21 jewels
    • Durowe/INT 7522/3: 11 1/2”’, 21 jewels, date w/o quick-setting
    • Durowe/INT 7523/3: 11 1/2”’, 21 jewels, date and day w/o quick-setting
    • Durowe/INT 7525/3: 11 1/2”’, 25 jewels, date with quick-setting
    • Durowe/INT 7526/3: 11 1/2”’, 25 jewels, date and day with quick-setting
    • Durowe/INT 7527/3: 11 1/2”’, 25 jewels, maxi date and day with quick-setting
    • Durowe/INT 7528/3: 11 1/2”’, 25 jewels, watch calendar with quick-setting
• Same movements without suffix or with suffix /1, /2: older generations
• Same movements with suffix /4: newer generations

• Listing ID: 12757
• Manufacturer / Brand: Durowe / INT
• Caliber: 7425/3
• 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...: Date
• 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
• Country: Germany
• Identification: Movement marked with INT 7425/3 under the balance wheel. INT 7425 Listed in the Flume K3 catalog from 1972.
• Contributor ©: Uhrforum.de member buchenhain
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-70#post-9822219