That is a good take, Leon. I've had the same peeve with the TPGs and the W580 set. There is a parallel set of tobacco cards issued in Asia (Siam) that were machine cut and printed on nicer stock with shellacked fronts that they keep ID'ing and grading as W580s. If you see a really clean, really symmetrical W580 in a slab it is likely to be one of the Siamese cards.
