With Audio Note there are currently at least 10 versions - and the designation AN E/B will mean AN-B copper wires. AN E/Spe would be their speaker with 99.99% Silver Litz wires.
Constantine Soo (editor and owner of dagogo.com) wrote a review of the AN E/D in 2001 which was I believe the then top of the line speaker for $2750
http://www.stereotimes.com/speak071701.shtml
The good news for most of these original owners is that new pricey models came out and some of these older speakers then also go up in value as well so it is very possible that people who bought them new in the 90s will get more than they paid. Second hand buyers do okay if they love the AN E because they can buy them and get some semblance of AN E sound for a fraction of the price. I sold my AN J/Spe for 20% more in 2016 than I paid in 2003 for example.
The 1992 models would have the AN B cabling, and been made out of chipboard. As the years went by Audio Note turbo charged them moving to 13 ply Russian birch front and back with an MDF wrap, moving to silver wired models on the internal cables and also the voice coils themselves and to much higher quality caps resistors and external crossovers. Cabinets have now moved even further where they are full 15 plu no void Russian Birch with carted sheep's wool (over dacron) and Hemp woofers over paper and also AlniCo options on both the woofer and the tweeters.
So it is difficult to tell you what the second hand price would be but if I were the original owner I would probably take what he paid and ask at least double.
And for fun - You can see the new plant and the speaker plant that began in 2009 and how the speakers are currently being made. They are quite old school - built entirely by hand. No molded plastic assembly lines in China.
https://parttimeaudiophile.com/2017...nd-life-in-the-fast-lane-with-peter-qvortrup/
Lastly I would point out that a new pair of AN E/Lx speakers would beat ALL AN speakers from the 90s handily and any Snell. The tolerances are far higher and the quality of everything from drivers, cables, cabinetry is vastly superior to that era.
The AN E/Lx also gives you 20 finish options plus an option high gloss(so x2 for 40 choices) and retails new for $5,479.
There is an AN J/D model which is only available in black ash for $3,985 and $4200 (Hemp woofer version).
Further the AN E is offered as a kit speaker starting at $2,000.