Mickey magazine started printing Prince Valiant in 1940, just before the war. Mickey magazine was stopt soon after that (but re-started in 1952) and I am not sure in how many issues PV was printed. One time in history bundels were created. In each number around 18 weekly magazines were published. The picture below is from bundle 19; it contains the numbers 414 to 432 from 1960. It's called le Journal de Mickey.

Mickey 19

Mickey 1935