Some weeks ago, I was fortunate enough to acquire a New In Box SP 8-9 stylus. Unused - I was not expecting it to play well, the suspension having stiffened. I replaced the rubber ring around the stylus with a new one, the old one had dried up, and checked the diamond with a microscope. It was perfectly regular and clean - the PU really had not ever been played. As if I needed convincing - everything inside the wooden box looked as if it had never been opened (the measurement diagram, etc.)
I put the PU on my other tonearm, and lowered into the groove of a record, and heard very well resolved music from my Beogram 3000. That was fun - with a stylus as ancient as from 1968.
And yes, I do have Frede's lid. He is starting to wonder about me, by the way, a lot of things have come in the way of my taking the trip down to pick up a Beosystem 1200 he has refurbished for me, as well as an extra Beolab 5000 amplifier I want to have.