I did some more research and found this in 25th Edition Blue Book of Gun Values;

Model 659 Stainless - 9mm Para. cal., similiar to Model 459-only stainless steel, 14 shot mag., ambidextrous safety became standard 1986 39 1/2 oz, Disc. 1988.
Approx. 150 Model 659 "Interim" pistols were mfg. in 1988 only. Add $150 to values listed.

This would match the build date S&Wman gives. The salesman scribbled so badly on the receipt I can only clearly read 10-10-8. 20-30 years ago is a long time to rely on memory so I believe I purchased it on 10-10-88.

Would a letter from Jinks help with confirming it's identity and value?

Thank you for all of the responses.