I recently purchased a set of JPX-E500 irons 5-PW and I am trying to authenticate them. There are no serial #s on the hosel as on the US Mizunos. They also have what seems to be .370 tip NS PRO
HL shafts, were as all US forged Mizunos have a .355 tip. I believe that I got them from a reputable dealer in Japan, but one never knows. Thanks in advance if you can help with info.