I have several of these lovely lids available.
This cover fits a Griswold skillet #8 with a pattern number of 704, the Griswold chicken pan with a product number of 777, as well as the Griswold Iron Mountain #8 skillet and Iron Mountain chicken pan. The product number is 468. It has raised lettering as shown in the photos – GRISWOLD NO. 8 SELF BASTING SKILLET COVER. The underside has the self basting rings, with the large Griswold block logo in the center. It is also marked on the underside with a patent number and ERIE PA. U.S.A. 748.
I cleaned the lid(s) to bare iron and seasoned each with a mixture of Pam and Crisco vegetable shortening. They are ready for use!