Interesting... uranium...
Mine is oragne, and the bottom is bare, white clay. It has a clear coating on the orage part. No marking of any kind. I kept this all these years since I thought I could use it for something: A typical pack rat. The size is perfect to culture veggies. I found a plate that would fit right, for a lid. BUT, I think I should purchase glass containers, since these foods are for my children, and I have no way of knowing what this crock is finished with.
If anyone has recommendation or favorite containers for cultureing veg, please write.
Thanks,