These are much better, thanks. #41 is great, but can you try it with wider spaced lines? Maybe even more widely spaced than #46. See if there is a happy medium where the box doesn't get lost, but the lines read almost like a ledger. I appreciate the elegance of #46, but the stylized font makes it a bit hard to read.
I love the abstraction of the pen, and, if possible, I'd love to see if you can come up with something similar with other "symbols" i.e. abacus, checkbook, ledger, bank vault... any other you can think of (quick sketch ideas would be fine).
Again, these look terrific, thanks!