When Winchester first came out with the 101 it was in 12 ga. It went for about $375.00 (mid 60's). Went into the service and was stationed in Germany, in a baracks that was next door to the Rod & Gun Club. Retired Sargent Major was in charge, asked him about the 101, and he ordered one right from Japan, no middle man, under $200.00. In June 1966 Winchester came out with a 20 ga., I really wanted that instead of the 12. He said no problem and told me that he would need 4 other buyers to get the gun for $166.85. I got the gun, 20 ga., 26" barrels imp.cyl/mod. 3" chambers, ventilated rib, nice checkering, nice finish. Serial numbered 43,000 below yours. And yes I still have it.