[Ron Ramirez]

You guys must be referring to that "Dynamic" cartridge Philco came out with right after WWII. Yes, the styli for those are basically unobtainium. To make matters worse, Philco designed the cartridge to only accept Philco's own proprietary stylus; use of a steel needle or the generic sapphire needle will destroy the cone of the cartridge which the stylus slips into.

A newer magnetic cartridge would seem to be an answer to the problem, until you consider that Philco set the mounting holes too far back for a modern cartridge.

Sometimes companies did some really dumb things in order to be different from their competitors...but then again, Philco didn't expect anyone to still be using 46-1209 sets 68 years later.