This is a vintage scope block for the heavy barreled model 70 rifles. At their tallest point, the National Match block is 0.470", the Target/Varmint block is 0.360", and the Bull block is 0.262". These are the forward scope block, mounted on the rear of the barrel.
These are original Winchester factory parts in very good to excellent condition and include the screws.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE
