The dark purple plate pulls up only three sets, but these brick combinations don't match a set from those three. Hmmm... If the bags are sealed then they might have been a custom LEGO "Pick-a-Brick" order.
LEGO has two versions of the LEGO Pick-A-Brick service. One is inside a brick and mortar store, the other is selected on line.
If a customer's online order exceeds a certain prick threshold, (Can'tcan't remember, something like 200 bricks), then the order is sent to the LEGO main distribution factory in Denmark, which adds three or so weeks to get your bricks, but I think they seal/ship them in these bags.