tate I cant find my tool catalog but here is some stuff from goggle re the valve spring tool
hope this helps
The P7 valve spring compressor came in two basic versions. The 1950's version had a beveled hardwood base with wood pistons; the 1960's version, which included 912's, had a laminated wood base with aluminum pistons, both of which were more durable. Also pictured below is the P114 for 4-cam engines, and the P200 for 911 engines. Tom didn't actually say what he was working on...
Image P7, early version.
Image P7, later version.
Tate the pictures dont come across just goggle it and you will find the pictures