According to vintage drumatix (est.1997) this oval "red P" is a 50`s badge and the rarest pearl brand you can find, and the one you show was put on all brands from the 50`s to 65ish and then continued on low end and jr. models up to 1973. I don`t know how accurate this info is !i It doesn`t say ..Made in Japan on it !i
That site is wrong on the date,the badge you posted is the one that pearl used from 1964-66..The same badge in cap's date the drums from 1960-64...Mikey