I'm hunting for an Underwood No.1. From what it researched it was after the Wagner typewriter and was the first commercially successfull front-stroke visable writer. I like  how it is smaller than all of the other typewriters like the No.3 and the No.5. I want a No.3 from the early 1900s ,however, I'm after the No.1 first.

Here's a web pic of  a No.1.