Good to see a model of a modern General Aviation type.
BTW: While the Bonanza was designed in the 40s as you state, it has remained in production. The models shows the window arrangement from the early 1960s, th e back window was later enlarged and reshaped.
The model also features tip tanks, which are a post production modification. A friend has them on his Bonanza 36 (long fuselage, conventional tail).