don't know if this will help at all, and i know very little about these Moving Coil Cartridges
BUT i have a Vintage PS Audio MC Amplifier. i got it along with a couple other PS Audio units on an eBay auction a couple years back.
the early PS Audio gear is really sweet, i have some 70s and 80 units in my primary and secondary systems. the technology is simple and the sound is surprisingly clean and straight up. i am not familiar with today's high end equipment but would willingly match this vintage gear with anything out there. i have tried to initiate a new thread here in the analog section but am awaiting moderator approval, which does not seem to be forthcoming. i have no idea what this MC Amp might be worth but would like to see it go to a new home where it can be of benefit to somebody. from perusing your thread and responses, this might be right up your alley.
there is no data in the A-gon BlueBook to indicate its value but i'd be happy to describe it further to you if you wish, and even to send you some pix. from what i gathered here, it seems you would be looking to add a *link* in the chain either way, so it feels like this could be of interest to you...
if you wish to contact me directly, look me up in the member look-up section. perhaps somebody watching this will chime in with some input on this comment?