1954 Smith-Corona Sterling
Up for sale is a nice Smith-Corona Sterling (5A-Series) which was manufactured in 1954. This typewriter is in good shape overall, however it has a few cosmetic flaws. The sides of this machine appear to be slightly concaved, and there are a few small areas of missing paint on the rear. Mechanically, however, this typewriter is in perfect working order, and is an amazingly smooth typewriter to type on. This is yet another typewriter that is great for heavy and frequent use, and is ready to be used for years to come. Universal ribbons fit this machine without any issues, and are sold on this website. The owner's manual for this typewriter can be downloaded for free here: https://site.xavier.edu/polt/typewriters/SC1951.pdf
If you're in the market for a reliable workhorse that's easy to use and maintain, then this is another great option from the '50s.