https://www.reddit.com/r/typewriters/comments/1xn596e/remington_identification_help/

Prior to this in the late 40s and early 50s were the Remington 17 and KMC versions before they switched to the Remington Super-Riter. This one with the push and slide margin controls marks it as a Remington Standard.

There are only a few models in the database that have this body finish and "chicklet" style keys (Both James Grooms and Richard Polt have them), but perhaps this was a tooling change when they moved manufacture out of the US to Italy some time around 1962?

These were used by Robby the Robot, Lina Wertmuller, and Grace Kelly. Mel Gibson's character used one in the 1982 movie The Year of Living Dangerously.

Your machine should have the Fold-A-Matic feature which should help you clean out the internals: https://boffosocko.com/2024/12/06/using-the-fold-a-matic-feature-of-the-remington-standard-to-clean-oil-and-adjust/

Should you need to replace some of the internal rubber grommets: https://boffosocko.com/2026/02/23/rubber-grommet-repair-on-remington-super-riters-and-standards/

The manual: https://site.xavier.edu/polt/typewriters/RemingtonSuper-Riter.pdf

There was a laterRemington 19 which had a plastic body and similar "chicklet" keys that showed up in the early 60s,