This Winchester manufactured fifth variation complete breech bolt assembly with the fourth variation safety lock and late variation bolt handle with the hole in the ball portion is for the later pre-64 model 70 bolt action rifle in 270 Win and 30-06 Sprg caliber and is in very good condition with light wear. (file photo)

Note: Winchester pre-64 model 70 bolt action rifles with the following calibers and serial numbers have been observed with this part:

30-06 Sprg: 411127 & 424218