Cortebert Sport Grand Prix. Beautiful vintage from the 1960s features a stunning guilloche/honeycomb dial. The watch is in good condition, fully overhauled this year, ready for next decades. About 60 years of age, it is in rarely great condition. Powered by the reliable in-house cal. 697 movement, it runs well with great parameters. It comes with new gold-toned bracelet, which fits to the watch case build and color. Cortebert has its history and heritage, traditions to producing movements for highly valued brands. Worth to study and experience.