NOS, or so I'm told. But this was from China, and words are cheap!
I had to go to two suppliers, as one had only 2 x SSM2056, but the full set of SSM2044. they were about $100 delivered in total. The next cheapest for the other 4 x SSM2056 were another $100, and so I ordered them as well.
All sourced from Alibaba - it's actually quite easy, with online chat to the various suppliers. Try to get them to use Ali Express, which is very much like the BIN part of eBay, with buyer protection and tracking etc.
I'll let you know if/when they arrive and the results after testing etc.