Thanks for the info Ronnie on the polishing. I suspected they wouldnt come apart. These type go thru a polishing process at time of manufacture. I have 2 peewees that didnt go thru this process. The colors are more dull, have some pops and the seam is way pronounced. There was a seller on ebay years ago that had a connection in the Czech republic that came upon a stash of these. Mostly loose, but some bags. He put the date as '40-'50s. I have seen the website that still sells them. Sorry, I dont have a link. Maybe Steph can find it.
As a side note. This type can get very large. I have a set of 10 that are over 1".