Hi, new member here. Picked up these three marbles recently at a local car boot sale. I thought they were unusual and a larger size than normal marbles. I have no idea if they are old or new or whether they have any monetary value. It would be interesting to find out more about them, what age they are and where they were made. The black flecked one intrigued me as it is not shiny and appears to be made up of lots of tiny pieces melded together. Can any member help? Thanks Gary