High Standard Model 101 Duramatic, .22 long rifle automatic pistol.  Serial #2136508, mfg. Hamden, CT.  Excellent condition.  6 ½” barrel has excellent bore.  Fixed sights.  Barrel and slide have 98% soft blue.  Frame has 95% matte finish.  Additional 4 ½” barrel has excellent bore and 95% blue, shows some grinding marks on bottom.  Brown plastic contoured grips are excellent .   Correct magazine.  In original cardboard box with extra barrel.  Neat two-barrel set! C&R OK.