To me, it is a bit suspicious because it is not uniform. But to complicate it, from the pictures, it doesn't look obviously fuzzy... the picture is fuzzy.
With plum, you will often see crystals. They obviously shine.
I ordered this bulk size (Gawith Bright CR flake) from a retailer and when I opened it up, it was almost like a dusting of powdered sugar. Obviously glinting in the light. It covered every flake (even in the middle of the block) and was entirely uniform. I don't age my tobaccos, but I have had some tins with age over the years by chance, and it is always the same. Crystals. But... I primarily smoke flakes. No idea what ribbon cuts might look like.
Your block, I think, should be similar.
Because it is not uniform, I'd think it is suspect. If it's not shining with crystals, doubly so.