I'm currently working with some handwritten notes that look like they could be quite old, or at least written by somebody who grew up a little bit earlier than I did. I don't really know when they were written, but judging by the style of handwriting, I feel like they could be a few decades old. They were almost certainly written by a British person.
Anyway, a few times in these notes, I find what I'm certain is a superscript letter 'x' used as an abbreviation for 'yards'. It is most certainly an abbreviation for yards, because I happen to have the printed notice that my writer was making notes on and the distance in the original is in yards.
I'm just interested why a superscript 'x' should be used as an abbreviation for 'yards', how common it was, and when (if ever) it fell out of regular use. Just because I'm seeing it for the first time, doesn't mean it's fallen completely out of use!
Comparisons with this writer's 'y':