Archer, you mentioned a 69A purchased in 1964, grooved receiver, Lyman 57 receiver sight (mine has a Lyman 58E), and a filler or a blank in the rear sight dovetail. Does your 69A also have only a front sling swivel for a 1-1/4 in. wide sling that came with the rifle? If so, then the rifle may be - is - a Junior Target Shooter Special. A very nice if not scarce variation of the model.