Google Rogers black strata or the full name black strata pearl. You'll see one link come up for pictures of Rogers black strata. You can see how they differ. Also, go to eBay and search Rogers black strata. You see a couple of differing patterns for sale there too.
You can compare by Googling Ludwig oyster black or oyster black pearl.
Sometimes in both cases other things come up because it is searching all the words, but I think you'll see what I mean.
The attached picture shows the earlier version. I don't have an example of the later version at the moment.
The one in Vancouver appears to be a collection of loners. The bass and floor are fairly close, but the mounted tom does not appear to be a match.
The oyster and strata patterns seem to vary quite a bit. Not sure what part of the plastic making technology accounts for that. Onyx's for example, were much more consistent, as were ripples.
