Service on older AP’s

[w@chman]

I have an AP 14800st from the 1990”s with a 2125 movement. It needs service and AP advises that they no longer have parts and suggested that they replace the movement with a current movement at a cost of $2000+. While the price is reasonable for a new updated movement, I would rather keep the watch original for collectible reasons. Does anyone have experience with anyone that services older AP’s. I have googled AP Service and the normal national watch service centers show up, but I have not had good experiences with them in the past.
Can anyone suggest a good service option? Any help would be appreciated.