gutten tag wolfy,
I recently bought a full set of ps5000 irons at a thrift store in Birmingham, Alabama that sound exactly like the ones you describe. Same shafts and grips and in the same excellent condition. Odd, huh? I have found no others online and no one in the extensive golf community around here has ever seen them either. Like you, I really like the way they hit, and like you, pitched the woods for more modern ones. You don't write like english is your second language, I'm guessing U.S. military? Anyway, we seem to be alike in our taste in ballhammers. If you find out anymore about them, please let me know.
Best regards-
TWB