ph-1 are the valver/willams shape! ph-2 are the newer ones! but it get confuseinas there is ph-2 mk - 1, 2, and 3! and then the brand new ph-3
i'm sure u'll work it out when ur lookin:rasp:
im looking for one ,thats a older shape than that mate. same as what my bird has which is on a l-plate