Toiletware Set Pottery Mark - Keystone

by Merrilea
(Harleysville, PA USA)



Can any one help identify this pottery mark?

It says KEYSTONE inside a Keystone, seems so simple but I have been unable to find this specific pottery mark anywhere.
Thanks for any help.

Merrilea

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Apr 08, 2015
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keystones pottery mark NEW
by: Holly A.

I just purchased a large white basin bowl with the old Keystone stamp. It is very old, no chips, minor crazing, a little discoloration from age. The word keystone inside a keystone. I cannot find anything, anywhere about it, except for the set of pottery you posted on this site. I would like to know more about it and it's value ?

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