In the German material standarisation the V is used for two things viz.
If used at the end of the material name e.g. 12CrMo 19 5 V the V stands for "Vergueted" which is German for Normalised and Tempered.
If used in the name itself like 38 Mn VS6 the V stands for Vanadium.
Material 38 MnVS6 is a special ferritic/perlitic steel for precepitation hardening from hot working temperature. See
(DIN) EN 10267. The material contains 0.08 to 0.2 V and 0.02 to 0.06 S.