A number of Remington standards had the KR feature, which stands for "Key Restore". It's function was to repose any raised typebars (including any jammed typebars) without having to reach into the type basket and potentially get ribbon ink on your fingers.

They keyset on my Remington 24 uses different symbols as opposed to the one pictured. Instead of the KR there are two vertical bars (||), the TAB CLR is just a minus sign (-), and the TAB SET is a plus sign (+).

 

The one I own was made in Canada, but I don't know if it was exclusively produced here. I think every Remington I have from that era, early '60s to early '70s, have the identical keytops - portables and standards alike.

Although I like the 24, I wouldn't classify it as a must-have; it's a local-purchase model for me, not one that I would drive any distance for, or pay to have shipped - particularly since it's a full-sized standard. My 24 was a gift from Valiant, who sometimes lurks here and shies from standard models that end up in his possession.