PORSCHE DESIGN – 1919 Chronotimer – Automatic Chronometer Watch Movement – 25 Jewels

Porsche Design – 1919 Chronotimer – Automatic Chronograph Movement – 25 Jewels

Overview

The Porsche Design 1919 Chronotimer automatic chronograph movement is a mechanical caliber designed for high-precision timekeeping in chronograph watches. This movement is based on the ETA/Valjoux caliber 7750, a widely respected workhorse automatic chronograph movement first introduced in the 1970s. The 7750 family is known for its robustness, reliability, and modular design, making it a popular choice for both original equipment manufacturers and aftermarket replacements. This specific Porsche Design variant retains the core architecture of the 7750 while incorporating proprietary finishing and branding elements.

The movement is crafted with a lever escapement and incorporates 25 jewels, which reduce friction at critical pivot points for improved longevity and accuracy. It features a mono-metallic balance wheel, operating at a frequency of 28,800 beats per hour (BPH), and is equipped with an Incabloc shock absorber system to protect the delicate pivots from mechanical shocks. The oscillating weight is decorated with Côtes de Genève stripes, a traditional Geneva wave finish, and is marked with the Porsche Design logo. The movement is finished with overlapping circular patterns known as “œil-de-perdrix,” a decorative technique often associated with high-end watchmaking.

This caliber is a date-only movement, with the date window positioned at 3:00. The layout follows the standard 7750 configuration: small seconds at 9:00, central chronograph seconds hand, 30-minute counter at 12:00, and 12-hour counter at 6:00. The date disc features white Arabic numerals on a black background. The movement is marked with [TWENTY-FIVE | (25) JEWELS | ADJ. TO FIVE (5) POS. | 7750] on the mainplate. The article is graded Excellent in our Condition Grading Scale, with minor blemishes observed on the date disc.

Specifications

The Porsche Design 1919 Chronotimer automatic chronograph movement is based on the ETA/Valjoux caliber 7750. It features a lever escapement with 25 jewels, a mono-metallic balance wheel operating at 28,800 BPH, and an Incabloc shock absorber system. The movement is equipped with an oscillating weight decorated with Côtes de Genève stripes and marked with the Porsche Design logo. The caliber is finished with “œil-de-perdrix” circular patterns.

The movement layout includes small seconds at 9:00, a central chronograph seconds hand, a 30-minute counter at 12:00, and a 12-hour counter at 6:00. The date window is positioned at 3:00 and displays white Arabic numerals on a black disc. The movement is marked [TWENTY-FIVE | (25) JEWELS | ADJ. TO FIVE (5) POS. | 7750] on the mainplate.

Notes

• The article is sold “AS IS”. Please read our Warranty Policy before purchasing.
• Any parts not explicitly mentioned in this description or not visible in the accompanying photographs are not included.
• Colors may appear slightly different across various screens and devices so we cannot guarantee an exact screen–to–reality color match.

This Porsche Design 1919 Chronotimer automatic chronograph movement offers collectors and watchmakers an original Porsche Design variant of a proven automatic chronograph caliber, combining technical reliability with distinctive finishing.