Audemars Piguet Caliber 2225

Manufacturer	Audemars Piguet
Caliber Number	2225, AP2225
Type	Automatic
Lignes	11 3/4”’
Diameter	26.6mm
Height	3.25mm
Jewels	36
Total Parts	Unconfirmed
Vibrations Per Hour	28,800 bph, 4Hz
Power Reserve	~40 hours
Rotor Style	Ball Bearing
Rotor Direction	Bi-directional
Hacking Seconds?	Yes
Functions	Central hours, central minutes, central seconds, date at 3:00
Country of Manufacture	Switzerland
Known Models	Royal Oak 14790ST

The Audemars Piguet caliber 2225 is a Swiss made automatic movement found in the Royal Oak reference 14790ST. This movement replaced the AP caliber 2125.

The gold on the rotor is 21K. The text reads as follows:

“Thirty-Six / (36) Jewels / Automatic / Adjusted to Heat Cold Isochronism and Five (5) Positions / Audemars Piguet / Swiss / 21C”

Removing the movement from the case:

Removing the 2225 from a vintage Royal Oak requires lifting the movement from the dial side. Carefully remove the screws from the back of the watch, lift the bezel and crystal, then you can access the movement with gasket attached to the movement holder. There is a notch cut out in the case above the stem, not a split stem.

Gasket:

On the watch this movement was found in, the reference part numbers signed on the gasket are: EP-925034 (top number) / 193.014 (bottom number).

Examples of watches with this movement:

The Audemars Piguet caliber 2225 movement pictured here was found in this E series Royal Oak reference number 14790 (14790ST) with a short stick MK3 dial. This watch was produced in circa 2000. Below is the dial side.

Additional Resources:

• View more Audemars Piguet calibers
• Audemars Piguet on Wikipedia