First leap-year version (combined 48-month subdial)
Classic (non-Royal Oak) 5516 — First leap-year version (combined 48-month subdial)
1955–?
The first wristwatch leap-year display: a subdial at 6 shows the 48 months of the cycle with a blued hand for the year; moon at 12, peripheral date. Three known, all yellow gold; sold from 1959.
12 pieces. AP’s archive counts all 12 of its 1924–1969 perpetual-calendar wristwatches as 5516s produced in 1955 and 1957.
Identifying details
- Perpetual calendar
Calendar that accounts for month lengths and leap years.
- Moon phase
.
Variants of 5516
Reference overview →| Variant | Production |
|---|---|
| First version, no leap year, four subdials | c. 1948–? |
| Second version, moon at 12, peripheral date | c. 1950–? |
| First leap-year version (combined 48-month subdial)Current | 1955–? |
| Final version (separate leap-year dial) | 1957–? |
Case & movement
- Reference
- 5516
- Production
- 1955–?
- Case serials
- Case material
- 18k yellow gold
- Movement
- Manual winding
- Date
- Yes
- Caliber
- Audemars Piguet 13VZSSQP
Dial, bezel & hands
Unknown attributes are left out rather than guessed.
Movement
Audemars Piguet 13VZSSQP
13-ligne VZ-family movement with perpetual calendar used in the 5516; the 1955 ébauche of the example in AP’s heritage collection is numbered 66136.
Manual winding