First Series
Perpetual Calendar Secondi al Centro 2438/1 — First Series
Undated
Applied Arabic numerals and feuille hands.
About 60–70 in total in yellow and pink gold, about 35 of them yellow gold.
Identifying details
- Perpetual calendar
Calendar that accounts for month lengths and leap years.
- Moon phase
Variants of 2438/1
Reference overview →| Variant | Production |
|---|---|
| First SeriesCurrent | Undated |
| Second Series | Undated |
Case & movement
- Reference
- 2438/1
- Production
- Undated
- Case diameter
- 37 mm
- Movement
- Manual winding
- Date
- Yes
- Caliber
- Patek Philippe 27 SC Q
Dial, bezel & hands
Unknown attributes are left out rather than guessed.
Movement
Patek Philippe 27 SC Q
Centre-seconds cal. 27 SC fitted with a perpetual calendar (“Second au Centre Quantième”). Only 179 were made, consecutively numbered 888'000 to 888'178, for the refs. 2497 and 2438/1.
Manual winding · 18 jewels