Have been looking at a few LT1's lately and have noticed that the font on the "O" in the date codes seem to vary. it seems the early 70 cars have more of a round looking "O" and the later 70 and 71's that I have seen have more of a square looking "O". I only notice this in the date code and it seems to be only on the second "O" if it has one. Any thoughts?

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