18”’ | Hand Wind | Cylinder | Small Seconds |

Remarks:

• Porrentruy registered two models no. 142 in the Swiss Official Gazette of Commerce. One in April 1907, another one with slightly different design in November 1907. See extra pictures. The first is named ‘type 1’ here, the second ‘type 2’
• The Societé Horlogère de Porrentruy became the Phenix Watch Co. in the 1920s

• Listing ID: 13338
• Manufacturer / Brand: Porrentruy
• Caliber: Model No. 142 (Type 2)
• Size in French Lignes: 18'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown with pin/pusher
• Seconds Hand: Small seconds
• Escapement: Cylinder
• Date, Day, Month...: None
• Jewels: 10
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Brass
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1907
• Country: Switzerland
• Identification: Registered by the Societé Horlogère de Porrentruy on 09.11.1907 in the Swiss Official Gazette of Commerce as model no. 142. Model No. 142 is not an official caliber designation, but was used to register the design.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)