...so the marble is 13/16 in reality and you are positive without a doubt it is older than 2003... and yet you had no clue? I throw my hands up in the air. I don't think it would matter if I showed you 20 exactly like it.
Let me correct myself on the proper spelling “moldy.” Originally called “shield.” I have been calling them Moldies which is correct for plural. Found in same places wisplers are found, but much less common.
Euro Mouldie/Moldie. They are a patch structure marble I have only seen in one size. There is mottling on every single one. I wouldn’t be surprised if we figured out one day that they were made by Irene Manufacturing in England, but maker is unknown at this time and that is a complete guess on my part. One of the Euro types I never see in the USA.