Yashica-A in gray leatherette on left from 1959. The Yashica Rookie (on right) was a Japanese domestic market only model introduced in early 1956. In Japanese brochures and on the outer shipping box, the Rookie is also known as the Yashicaflex Rookie or simply the Yashicaflex Model R.
The Yashica A and the Rookie share many of the same features and specs. The Copal shutters were the same and the Tomioka Optical made lenses were also the same in the beginning. Later models of the A (including this one) upgraded to a slightly different lens configuration.
These outer shipping boxes are roughly from the same period. The Rookie is from mid 1956 while the A box is from early 1957 (or so). There are slight differences in the two boxes… the Rookie box is bigger but weighs less than the A box.