Returning to the original topic:
These are described as I over A or I over inverted V, but they're neither of these are they? That limb, showing to the right of the I, isn't a match for either.
Here's a 1700 I have which shows the same limb to the right of the T and, while we're at it, what's that going on to the left of the T?
Yes, I know it's a horrible specimen, but it's the only one I've seen apart from Nicholson's (144), and mine is a shade better than that one. Same die. Note the extra blob above the olive branch.