The typewriter that I used in high school in the 80s (which dated back to at least the 30s if not earlier) only had the numerals 2–9. One typed l for 1 and O fo

The typewriter that I used in high school in the 80s (which dated back to at least the 30s if not earlier) only had the numerals 2–9. One typed l for 1 and O for 0. Typing numbers is not that common an occurrence in any event which made it easy for me to use old-style numerals in papers I wrote in college using LaTeX.