old porcelain marble.

[Golden-1]

found this old porcelain marble in my back yard i am 100% sure it is porcelain and was told it was pretty old because it was not perfectly round and because it is porcelain. but i am not sure how to tell the age of a marble can anyone help me??

 

[creskol]

Hard to tell from the photo, but it looks like an earlier swirl agate marble .. 1920'ish or so, give or take a few years.

 

[Golden-1]

thanks for the info