Based on the photos I saw on the The Typewriter Database, I estimate this Underwood Noiseless typewriter to stem from the 1920s or perhaps 1930s.
While I've never typed on this type of typewriter, I do remember writing school projects using my mothers old electronic typewriter. And, while I'm sure my parents thought that we had it easy (using a nifty electronic typewriter, with soft-touch keys) I can't help but think that kids these days have it really-really easy.
But then, perhaps kids these days simply have other challenges - like disciplining themselves to stay focused among the distraction created by our many digital devices and social platforms. Poor things. I pity those kids kids.