This is a masterpiece "Ingenieur" Ref. 666A non-date model manufactured by International in 1960.
While most Ingenieur models from this era come with a calendar function, this non-date version is rare and features the highly sought-after "torpedo" index design. The silver dial, which combines torpedo indices with dauphine hands, boasts a simple yet beautifully refined design. The symmetrical layout unique to a non-date model, along with the well-aged patina, further enhances the watch's aesthetic appeal.
In addition to the ease of use that comes with a non-date model (only requiring time adjustment), this watch features an original bracelet (FF1A, 1/66) that accommodates wrist sizes up to 19.5 cm, making it suitable for year-round wear. Among the highly practical Ingenieur models, this piece stands out as an excellent choice for daily use.
It underwent a manufacturer overhaul in April 2022, and comes with a repair statement, an archive certificate (dated 1960), a repair box, and other accessories.