I was given a Sig P220 in .38 Super from my dad. It has a heel magazine release along with 7 magazines. I sent it to Sig for an Action Enhancement Package, Short Trigger Reset, re-blued the slide and had night sights put on the rear. Sig also replaced some springs ect.. I put Rosewood grips on it but still have the original grips which look brand new. According to Sig the gun is stamped on the bottom of the barrel showing it was made in 1988 in West Germany. When I got it back I fired a magazine to make sure it functioned fine, then cleaned it and put it back into the box. Anyway I have been approached by and told by several gunsmiths that just the magazines are rare, as is the pistol. How much is this pistol worth approximately since I have seven magazines and about $600.00 worth of work done on it by Sig Sauer? It looks brand new.