No. 0 should be 5/8", No. 00 should be 9/16" and No. 000 should be 1/2", at least by industry standards, which I am pretty sure Peltier used. I think @mibcapper might have a 3/4" (No. 2) Cerise too.
I wouldn't go there just because it glows. And when identifying single-color Kokomos that are not one of the "special" colors, like that lipstick red, it's important to remember that they are vanishingly rare relative to Peltier Rainbos so it's usually wise to err on the side of Peltier.
Cool, Art. I'm thinking inserts like that are pretty unusual in a #230 box - but then, the format of the one with the girl on it is less common too - maybe the only inserts that were reinforced with metal were in that particular box?
Very nice, Art! The pouch reminds me of the "V" for victory pouch - does it fit in the insert, which doesn't look like it had marbles in it? Do you know what box/tin the insert is from? The size seems less common to me.