I recently became aware that the Rolex warranty paper includes the address of the buyer. Not sure if modern Rolexes still continue this tradition because I don't own a modern model.
On Reddit, someone shared a for sale posting of a Submariner from 1990. So I looked up my own watch and, lo and behold, the address from the mid 80's is there. After asking ChatGPT for the translated address, I put it into Google Maps and found the home that bought my watch more than 40 years ago. Neat little piece of history.
Separately, ChatGPT informed me that the Plaza Accord was signed around that time which makes this watch extra special. Following the agreement, the Japanese economy boomed and made their local population very wealthy.