Yes, I have a Stainless Delica CE from ca. 2004 and it has an AUS-6 blade. Certainly not a bad steel from a practical standpoint, and it does sharpen quite easily, but if I'm correct it's among the "cheapest" steels Spyderco has ever used on one of their models. I gotta say, it's held up pretty well though!
My collection so far: 52100 Military (2); 52100 PM2 (2); 52100 Para3; Stretch2 V-Toku; KnifeWorks M4 PM2; BentoBox M390 PM2; BentoBox S90V Military; Police4 K390; S110V PM2; SS Delica AUS-6; Wayne Goddard Sprint VG-10
Wish list: Hundred Pacer; Sliverax; Mantra; 52100 PM2 SE; Kapara