[geo255]

My first typewriter didn't have a "1" key. You were supposed to type lowercase L when you needed a "1".

Underwood 255: https://typewriterdatabase.com/img/gunderwood%20_10166_15186...

[geocar]

Because of the positioning you can press "l" then backspace then "." and get a serif on the bottom which makes it look a little-more one-like.

Similarly you get a "!" by doing "'" backspace "."