This is a super lid; I've never seen it before, although I must say I am not a bears grease pot lid expert. It is most certainly English and most likely from the mid- to later 19th century. Dale 1977, the current go to reference (but soon to be superseded with a new much more comprehensive book by Houghton, Layden & Taylor), illustrates 40 and references another 36 bears grease lids. As far as I can tell this lid is not shown in Dale. I suggest you post to the following Facebook sites: Historical Guide to Advertising Pot Lids https://www.facebook.com/groups/314819805599206/ and Pot Lids https://www.facebook.com/groups/385379778270136/ and see if any of the collectors can help you.