vintage Japan C7 Christmas light bulbs in cute original packages w/ Santa

Two packages of unused Christmas light bulbs, mid-century vintage, made in Japan. Both packages are all blue, one a dusk blue, one the more usual regular blue color.

I didn't open these or test them, but they look nice and clean and I think they probably work fine. Packages marked C 7 1/2, these look like regular C7s to me.