The silver engine-turned dial has an eccentric chapter ring with roman numerals and subsidiary dials for seconds and calendar.
An aperture for the moon phases above is flanked by sectors for regulation and signature.
The back of the case is engine-turned, number and 509, with the casemaker’s initials L.J.
Lepine, no. 2460, with the original Breguet-type gold male ratchet key, 48mm diameter.