Yeah I know, specially on illustration work specifically copying a style of a good artist, already in that time could trick the majority of people. One easy way to see is the guard of the hand on that same sword where the fingers are also mixed, the thickening is drawn on the top part and then confuses it for fingers and under is non existent. The clothes in the center under his arm are well drawn but is not consistent ?!? meaning the fabric looks good visually but you cannot identify what he’s wearing. If it wasn’t an artist that can produce this kind of work wouldn’t have rushed it and make those mistakes.