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

Remarks:

• Crown wheel, ratchet wheel and click underneath the 3/4 plate
• Plastic cover on the dial side
• Movement family:
  • Hand winding
    • Junghans 623.00: 17 jewels, no date, motion works height 2.1 mm, bevelled edges
    • Junghans 623.01: 17 jewels, no date, motion works height 2.4 mm, bevelled edges
    • Junghans 623.05: 15 jewels, no date, motion works height 2.4 mm, non-bevelled edges
    • Junghans 623.20: 17 jewels, date (with quick-setting corrector), motion works height 2.4 mm, bevelled edges
    • Junghans 623.21: 17 jewels, date (with quick-setting corrector), motion works height 2.4 mm, bevelled edges, differences to 623.20 not known. Some sources say that the 623.21 has a higher motion works than the 623.20, but that’s not the case!
    • Junghans 623.25: 15 jewels, date (with quick-setting by repeatedly changing 21:30 – 24 o’clock), non-bevelled edges
    • Junghans 623.62: 15 jewels, no date, differences to other 623.xx not known
  • Automatic
    • Junghans 625.00: automatic, 25 jewels, no date, motion works height 2.1 mm
    • Junghans 625.01: automatic, 25 jewels, no date, motion works height 2.4 mm
    • Junghans 625.20: automatic, 25 jewels, date (with quick-setting corrector), motion works height 2.4 mm
    • Junghans 625.21: automatic, 25 jewels, date (with quick-setting corrector), motion works height 2.7 mm
    • Junghans 625.25: automatic, 25 jewels, date, ‘economic’ -> probably never produced

• Listing ID: 5087
• Manufacturer / Brand: Junghans
• Caliber: 623.21
• 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: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Junghans Star-Shock
• Beats per hour: 21,600
• Balance Type: Nickel
• Power Reserve: Approx. 40 hours
• Production Period: Probably 1974 - 1976
• Identification: Movement marked with 623.21 and Junghans logo.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/#post-1124141
• Country: Germany
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)