Someone had a ton of LC-PDS PAS-16 cards several years back. It may have been Shreve Systems when they did their pre-"going out of business--uh, huh" sale. I think they were selling for like $1 and $10 shipping.Try writing to Tom Owad, who wrote the article I linked. A few years back he had crates of the things, NIB, which he couldn't get rid of. Rid of which he could not get. Whatever. I don't recall if they were the PDS or the Nubus versions though.
But I wouldn't be surprised if someone like Tom cleaned up the stock from Shreve. I did pretty well in Daystar upgrades. Seeing some of the prices on upgrades these days, I should have held onto the stuff I got from Shreve, instead of rushing to recover my costs.