List of Manufacture la Joux-Perret (LJP) Calibers

Below is a list of movements produced by Manufacture la Joux-Perret S.A. The LJP calibers that are already listed on the site will be linked directly. Some of the listings aren’t ready because real images are still needed, please check back or submit a caliber image of the movement in your watch. If you know of an LJP calibre that exists but isn’t in the list, please add it to the comments below.

NOTE: This list is a work in progress. We are actively updating it, as well as the corresponding caliber listings. If you do not see what you are looking for here, check back soon.

LJP Automatic Calibers:

• G100 – 3-hander with a date at 3:00 (can be 6:00)
• G101 – 3-hander; no-date
• G1A0 – 3-hander; open balance wheel at 6:00
• LJP6900 – Small seconds at 9:00

LJP Manual-Wind Calibers:

• D100 – Small seconds at 6:00
• D101 – 2-hander; no-date
• F100 – Small seconds at 6:00, date at 6:00; power reserve indicator at 12:00
• LJP7380 – Small seconds at 6:00

LJP Chronograph Calibers:

• L100 – Tri-compax with 12/6/9 layout; day-date at 3:00
• L101 – Tri-compax with 12/6/9 layout; date at 3:00
• L102 – Tri-compax with 12/6/9 layout; no-date
• L110 – Tri-compax with 3/6/9 layout; date at 4:30
• L111 – bi-compax with 3/9 layout; date at 6:00
• L112 – Tri-compax with 3/6/9 layout; no-date
• L113 – Bi-compax with 3/9 layout; no-date
• L120 – Tri-compax with 12/6/9 layout; central GMT hand; date at 3:00;
• L121 – Tri-compax with 12/6/9 layout; central GMT hand; no-date
• L122 – Bi-compax with 12/6 layout; central GMT hand; date at 3:00
• L1C0 – Bi-compax with 12/6 layout; retrograde running seconds indicator (30 seconds) on the left; retrograde date indicator on the right;
• LJP5000-4 – Bi-compax with 3/9 layout; small running seconds subdial at 9:00; 30 minute chronograph counter at 3:00

LJP Tourbillon Calibers:

• LJP7390 – Manual wind; hours and minutes subdial at 12:00; tourbillon cage at 6:00
• LJP7803 – Automatic; chronograph; central hours, central minutes, central seconds; 30 minutes chrono counter at 3:00; 12 hour chrono counter at 6:00; tourbillon at 10:30
• LJP7814 – Manual-wind; skeletonized; central hours, central minutes; tourbillon cage at 6:00
• LJP7905 – Manual wind; central hours, central minutes; tourbillon at 6:00

About Manufacture la Joux-Perret:

MJLP is based in La Chaux-de-Fonds, Switzerland. It is owned by Citizen Watch Group (Japan) as of April 2012 via acquisition of Prothor Holding SA.

Additional Resources:

• Manufacture la Joux-Perret S.A. official site