I just went and looked at a 35 year old mans Fathers and Grand Fathers marble collection last week end. There was a hand ground agate, one bennington 2 slags and 3 Peltier rainbos. And about 2-300 Mexican and Asian marbles.. He had some wonderful antiques in his home and it was a great time hearing about and seeing some documentation on some of his past relatives. Had a great time! But he had to hear my spiel about how if there is a contanor of marbles in a home all marbles that enter that home seem to get put in the container. I have been to numerous homes to view containers of marbles where the owners were in their 70s and 80s. All but 3 of every collection I have viewed contained at least some new marbles. and a majority contained mostly newer marbles?? I guess grandkids bring marbles to add to the grandparents marbles??? Or maybe they take them from the kids(LOL)