Danish modern teak wood salad set, mod vintage square wood bowls

Vintage squared shape wooden salad bowls set, probably teak. These have a rough worn finish inside and out, but a little sanding and oiling would restore these bowls to a usable set!

The big bowl measures 12 1/2" across the rim, and the four individual bowls measure 6" across. None of these pieces are signed or marked that we could find.