Swiss. An interesting gold double dialled triple calendar and moonphase minute repeating chronograph keyless openface pocketwatch
The nickel plated movement visible through the enamel calendar ring with bimetallic balance, repeating on two gongs by operating a slide in the band, the enamel calendar ring showing months for four years, days of the week and the date with central hands for each indication, capable of being adjusted by operating one lever in the band, the main white enamel dial with blue and red letters instead of numerals spelling the name of the original owner Rodolfo Sauzer, a sector for the moon with lunar calendar, subsidiary seconds, decorative gold hands, in chased and engraved gold case with translucent polychrome enamel monogram RS
54 mm. dial.