I have a PRS-950, bought on ebay a couple of years ago from a USA seller, that has the Cyrillic alphabet added so it can handle Epub files in Russan. Based on the information readout I believe that this was a jailbreak done by the original Russian importer. I suspect that it is a rarity in the USA. Still also handles western alphabet Epubs too.
Another has the Sony original PRS-950 illuminated cover, the only one I have ever seen. The not illuminated cover is much commoner.
Another has the Sony original PRS-950 illuminated cover, the only one I have ever seen. The not illuminated cover is much commoner.