One word of warning -- the numbers on the Promovetro site are the VAM numbers. The VAM sticker is the one that has what looks like a mortar & pestle on it. I am sure that it is probably a punty with glass, but... I used to think these were the same as the VM numbers. It can cause a lot of misidentifications. 022 is Venini's VM. Venini doesn't have a VAM number that I have ever seen. I am not sure if the Colleoni number is correct or not.
Someone mentioned in another group that even the VAM (Vetro Artistico Murano) number was being abandoned because of some problems. I don't use the VAM table that is under the Concessionaires link on the Promovetro site anymore, because I was getting things wrong more often than right.