Some people prefer stainless, Springfield isn't making too many of the mil spec as of late, let alone stainless, no one has them in stock right now, timing might be right for a sell.
I'd ask for $850 but be ready to take any cash offer over $750ish. If trading in to gunshop expect $350-400ish. If auction, start bid at $750 and see what the market says. I'd expect $800ish, what with the pre-ban frenzy and shrinking dollar... unless you're selling to a good friend. Then maybe $650 where it should be if things today weren't so... bolloxed up.
Is it the big blocky squared off grip frame and dust cover or the later slimmer version? (wasn't that change about 2004?)
A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." - George Washington, January 8, 1790, First State of the Union Address