VERY RARE UNION SWITCH AND SIGNAL M1911-A1. EXTREMELY LOW SERIAL. 1ST VARIANT W/ CORRECT MATCHING BARREL, GRIPS, MSH, AND ROLLMARKS. COMES W/ WWI PRODUCTION TWO TONE MAGAZINE, "B" MARKED. APPEARS TO HAVE BEEN RE-BLUED AT SOME POINT, BUT FINISH IS VERY GOOD FOR IT'S AGE.