Tough to tell from these, but similar marks to these are found on the 1938-D 3 1/2 leg. It's one of the die markers for that variety. These look slightly straighter though ( could be the lighting). I've seen this on a couple other years as well. Curious, because it doesn't match up with a clash. I assumed die gouge initially on the 38-D, but now that I've seen this on multiple years, Idk. Might be something obvious I've overlooked.