Model 3 Folding
L. C. Smith Bros. & Corona Typewriter, Inc.
Frank S. Rose
Original Price: $49.50-50 (US); $69 (Canada)
Modeled after the Standard Folding typewriter, according to Michael Adler, this model is "one of the most ubiquitous of all old typewriters", with over 700,000 produced. The typewriter pictured here is all black, but other colors were sold. The middle picture to your left was from an advertisement in the March 1923 issue of Popular Science Monthly, page 136, retrieved via Google Books, https://books.google.com.