Help Identify

Need help to identify a po8 that is for sale. Chamber date 1910 DWM on toggle All visable numbers match Here is where it gets tricky on the reciever top near the junction with the barrel is what appears to be the SS rune stamp also Nazi eagle proof on side of the frame. Magazine also has the SS marking on a wooden base. A light brown shoulder holster also stamped to the serial number of the pistol with a pocket for a second missing mag is included. On the back of the holster in ink is written some American's rank and name and other stuff. Is this thing a SS pistol ( as the owner says) or a fake or what ? Condition about 70 % Price being asked 950.00 Please help if you know