Dear Nandric, I have no feel for the politics of Eastern Europe, now that the war is over (thankfully), and all the countries involved have new names and different borders. I don't really know who hates whom these days.
The Lenco L75 platters were also dynamically balanced, and each one will have small drilled impressions on its inner aspect, indicating where mass had to be reduced to bring that particular platter into balance.
I don't know if the Mk3 is "the best". It is surely terrific, but I would like to have a shoot-out among three or four of the top contenders, done under well-controlled conditions. (Same tonearm and cartridge, same system, same listeners, but more than one.) Someone might reference the shoot-out that was published in a Japanese magazine in the 80s, but that one was not well controlled and did not include the Mk3 at all.