The vase was designed 1941 - 1944.
DV shoud be D and a number - D1 1962, D2 63 etc (year of manufacture)
P is the engraver - unfortunately P stands for Olof Petersson, who was active 1925-30
There is a PL Peter Lindhal 43 - 65, SP Sten Petersson 22 - 69, RP Rune Petterson 45-90, Sp Stefan Petersson 77 - now, and a lot with R
ciold it be one of these ?