I found this online: cal. R 27 PS automatic lever movement, stamped with the seal of Geneva, 39 jewels, adjusted to 5 positions, 22k yellow gold rotor, Gyromax balance, minute repeating on two gongs . porcelain-white dial, painted Roman numerals, feuille hands, subsidiary seconds . 18k yellow gold polished case by Jean-Pierre Hagmann, sapphire crystal display back, minute repeating activated by a slide to the band . case, dial and movement signed . with an 18k yellow gold Patek Philippe buckle diameter 33 mm