Those are nice, Winnie - and big too! I have some Alox packaging and have seen a lot more. But I've not seen anything that looks like your marbles in that packaging. The No. 6 I showed is 1" in diameter. An easy way to remember the original size numbering system is to remember that a 5/8" (10/16") marble is a No. 0. Then just count up by 1/16" increments: No. 1 = 11/16", No. 2 = 12/16" (3/4"), No. 3 = 13/16", No 4 = 14/16" (7/8"), etc. I hope this helps.
P.S. So a No.1 marble is bigger than 5/8" but no bigger than 11/16", a No. 2 is bigger than 11/16" but no bigger than 3/4" (12/16"), etc.