The question raised was originally the size of the numeral 1 on the two chips. I don't think this makes a variety because of the differences in temperature and pressure on the hot-stamp.

The size of the letter i is another question. It does look a little different now that you mention it. I'd have to see the difference on chips with similar hot-stamps to really agree or disagree. The chip is not one I would collect so I don't have a quantity of others to look at. I did look at the images on The Chip Guide for this item (listed several times for some reason). All the letter i's look the same to me on those images.