8 3/4”’ | Hand Wind | Swiss Lever | Small Seconds

• Listing ID: 1133
• Manufacturer / Brand: Péry / Dreyfus
• Caliber: Model No. 2005
• Size in French Lignes: 8 3/4'''
• Size range mm largest diameter: 0 - 22 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 15
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallic screw balance
• Power Reserve: Unknown
• Production Period: Around 1925
• Identification: Registered by Dreyfus & Co. in the Swiss Official Gazette of Commerce on 06.08.1925 under the number 37835 as model No. 2005. Model No. 2005 is not an official caliber designation, but was used to register the design. Listed in the Swartchild 1946 as Pery 8 3/4'''.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-49#post-6640716
• Country: Switzerland
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)