By v3 you mean v2 with st2555 seagull movement correct? I thought v3 was a misnomer. I will let you know how my ghetto tea staining works.
PAM 359 has not KW V3 version because there are only two versions from KW
KW V1 is with decorated A7750
KW V2 is fitted with Seagull
It is advisable to add KW before the version because there are old versions V1-V2-V3-V4.... from other makers
It is different in KW PAM 388 and PAM 505 because they have three KW versions
V1- with Seagull, with lug screw issues
V2- with A7750, with corrected lug issues
V2-Seagull- with Seagull, with corrected lug issues
These are just my advices for calling the versions but people could do it as they like
ALE