This was your answer to my post of a 15/16" marble
"I cannot alway offer an opinion when the size is so obvious.
This is a place to learn--do some more research"
Several experienced collectors have identified marbles this size as vitro, akro, master, champion, etc. So size is not obvious to me. As far as research I have 10-12 books I have read as well as a member of several groups and study pictures of marbles every day. I had what doctors say was a massive stroke and lost use of half my brain which effects memory, etc. So I ask dumb questions and hope I remember the answer. I am a newby to collecting marbles, it is one of the few things I can do. As a moderator I am sure you can kick me off this site if you wish. I just wanted to explain things to you and hope you understand.