Click on the top two images for more on the Grants 707 and 737.
The typewriter was a bit yellowed.
Painting it with hair-salon peroxide ...
Let it sit in the sun for a couple of hours:
Peroxide also bleaches clothes and skin! (The skin effect doesn't last long.)
Looking good!
Let's dig into the machine a little. The white part of the shell can be removed if you take out two screws and gently pry it off the turquoise base.
Here's the underside...
... and a video of some functions (tab, space, automatic spacer, typing).
According to The Typewriter Database:
Nakajima serial numbers are datecoded so that the first numerical digit
in the serial number is the last digit of the manufacture year.
That would make this a 1971 machine.
Since the Grants sticker was missing, I filled in the space with the Urban Legend Typewriters logo. This typewriter will probably be sold sooner or later to benefit WordPlay Cincy.