I bought a sealed set of the 1977 Red Sox team issue. These photos measure 7" x 8.5". They used the same exact photos in 1976 & 77, with the only difference being that Petrocelli was included in 76 and George Scott in 77. This set included Boomer, so the Yaz is a 77.
Bought it for the Yaz, but it included other great players. Here are the other HOFers and my personal favorite, Dewey:
The other players included in the set were Scott, Fred Lynn, Rick Burleson & Denny Doyle.