primitive vintage carpenter's tool box, heavy wood toolbox w/ original painted finish

Very heavy old wood tool box with beautiful original paint. One side is lettered C.S.K., the other R A L C O. I don't know if this is tool branding, or the initials and company of the original owner, but the lettering looks hand painted to me.

This is worn but still very sturdy, it's been stored away for many years. There's soil inside and out, and the metal hardware has rust. Box measures 16" x 9" x 7 1/2" tall overall.