Sold and distributed by Bushnell between 1968 and 1970 the ScopeChief IV 2.75x came in two variants the ScopeChief IV and the cheaper ScopeChief IV-M which included am integranted mount for use with mounting the scope on 22. LR rifles that had a grooved top receiver (Stroebel, 2000).
The scope included Bushnell's Command Post reticle first introduced on Bushnell scopes in 1956. By rotating a ring in front of the eyepiece the user could switch between a crosswire or flat post reticle (Stroebel, 2000).
Stroebel, N. (2000). Old Rifle Scopes. Krause Publications.