The real big ones were 70 some time ago (before the uro was introduced) and the smaller ones were like 45 ... and the real small ones came 30. A lot has changed since that time ... but collecting them is still fun. I for myself stopped buying each and everyone I can get and just focus on some special ones.BTW, I did not really recognise that they have changed in size - and I collect them for 15 years now Cheers,Flounder