Thanks guys,I have been selling this chip as a crest & seal. But after reading all the different input I was beginning to second guess myself. The outer clay rim doesn't seem to be sealed the same as the litho inlay. This was my area of concern. Here are some others I have a available as well. Seven different chips still available with a lot of known history. Thanks, Mike Spinetti EMAIL Finnetti@aol.com $10.00 each