I am about to purchase a Ruger .22 semi-auto pistol from a friend, and I'm trying to find out how much to offer him. I checked the serial# through Ruger and they said it was manufactured in 1981. Ruger also told me that it is a Standard model because of the fixed sights. The pistol has a black emblem on the grip, and has never been fired. It is in a Ruger box, but I don't think it is for this gun. The manual that accompanies the gun is for a Ruger Mark II or Standard, 1/82 edition. The serial number starts with 16... I have pictures but don't know how to post them. All help appreciated.