Probably 1996, based on my research.
+1
What's your source for that? As far as I can tell the Bundy II and Buescher Aristocrat 200 were sold simultaneously until Selmer dropped the Buescher line altogether in the early '90s (later reviving it for their first experiment with instrument-shaped objects from the Far East). I believe the Bundy II ran through 1997 when the AS300 and 1244 (the latter unchanged except for engraving) came about.
Serial number research that I've compiled points to the possibility that the Buescher Aristocrat 200 (Selmer product line) began, or was first introduced after the Bundy, and prior to the Bundy II. You'll find the Aristocrat 200 numbers between #738k, and 978k, and possibly outside of that range.
There's a serial number gap between the 1960's-1980's early model Bundy instruments end-of-production, and beginning of the Bundy II numbers (in my list) that begin very close to, and actually below #800k. Note to ebay sellers, Bundy II saxophone serial numbers
always begin with a 7, 8, 9, or a seven digit number starting with 1.
The AS110, AS210, and AS300 altos appear in the 1997 catalog, and there's no listing for the Bundy II. The 1997 tenors that are listed include the TS100, TS200, and 1244.
Interestingly, the Winter NAMM article appearing in the May, 1998 JazzTimes (America's Jazz Magazine) p. 69, mentions Selmer's release of two new alto saxes, AS300, and AS210. You would think the Selmer '97 catalog would have been out for over a year before the article's author lists those two models in the JazzTimes article. I'll dig up articles, or references for the Bundy II discontinuation that I can find this weekend.