12 1/4 x 12 3/4”’ | Automatic + Battery | Swiss Lever + Quartz | Sweeping Seconds |

Remarks:

• Automatic for seconds, quartz for hour and minute display
• The winding stem is used to set the quartz movement and has no connection to the mechanical movement (-> no manual winding possible)
• The entire mechanical movement, including the automatic, is only used to move the second hand
• To change the battery of the quartz movement, the entire plate must be removed
• PTS is a movement supplier from Hong Kong that has movements designed in-house by various Chinese manufacturers, but also sells their standard movements. The actual manufacturer of this movement is unknown, but it is probably produced exclusively for PTS

• Listing ID: 3666
• Manufacturer / Brand: PTS Resources
• Caliber: D3521
• Size in French Lignes: 12 1/4 x 12 3/4''' (base plate) (27.5 x 29.0 mm)
• Size range mm largest diameter: 22 - 31 mm
• Shape: Form
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 19
• Shock Protection: Similar to KIF Ultraflex
• Beats per hour: 21,600
• Balance Type: Glucydur?
• Power Reserve: Unknown
• Production Period: Approx. 2013+
• Country: China
• Identification: Listed in the PTS Resources catalog 2013/14.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-21#post-3236336