Revising my collection and this loved piece is for sale. Audemars Piguet Royal Oak Perpetual Calendar in steel & platinum, ref 25820SP.
This watch was made in the year 2000 and comes with a special Audemars Piguet 125th Anniversary certificate.

The watch was fully serviced by AP Clearwater in early 2018.
Condition is very good with only swirls/hairlines. Watch has the original AP signed bracelet and correct un-signed crown (this ref in 2000 did not have a signed crown, AP made signed crowns later -- I had to fight the AP Service Center to make sure that the un-signed crown was kept and it was.)
Full set includes the AP wooden watch box that is a motorized watch winder with AP outer box, AP Certificate of Origin, Instructions, AP suede travel cylinder, and AP service documentation.
Asking $52,000 USD. My price is firm. I am not looking for trades, this is a full sale only. Does not include shipping costs, I will work with buyer on whatever shipping options are preferred. Thanks for reading.