The picture shows all (3) 1970's Baseball "All Time Greats" Exhibit / Postcards in this lot. These look like old exhibit cards you would have gotten out of an arcade or vending machine. The center one has a post card back with statistics for 1901 - 1917 and mention of being entered in the Hall of Fame in 1946. The other two have blank backs. Included here are:
1973 JOHN McGRAW 1975 EDDIE PLANK 1973 "RABBIT" MARANVILLE
The first two each measure 3-1/2" x 5-1/2" and the third is 3-5/8" x 5-5/8". The condition of the three are excellent with each having lightly bumped corners. Also the center one has light creasing and the third has a single light crease at the bottom.