vintage NOMA Christmas tree lights, light string w/ bulbs in original box

Vintage NOMA Christmas lights - one string in the original box. This is used, and one bulb is missing so we can't really test them without it as they won't light without all bulbs in place.

But the plug, wiring and sockets appear to be in good condition, and we would guess that these would work if you have good light bulbs. They're very decorative even unlit, and the box looks good without a lot of wear.

We found no date marked on these, but maybe 1930s or 40s? They're the old ribbed glass light bulbs, with bakelite sockets.