Original Kodak filters for Kodak Retina cameras, they are labelled '32', but of course, that is the push-on filter size for the lens, these are actually 29.5mm.
Nice thin mounts so you can close the front of your camera with the filter in place.
Priced at NZ$15.00 each, airmail postage to the States or Europe would add around NZ$7.50.