A quick explanation of
Machine Doubling would be when the coin is struck, the dies rotate slightly, giving an appearance of doubling, when in reality the upper half of the letters/design are shifted. This is why you see a flat, shelf-like appearance instead of rounded edges, and it also explains why you dont generally see any extra thickness to the devices. The coin bhawk has looks like a very strong case of
Machine Doubling, but I would wait for an expert to confirm that