As found I know nothing about the item except for what I found on eBay. It is not marked possibly from C.F. Monroe Glass Company's Wave Crest.The jar is in great condition with no cracks or chips, it could maybe use a washing. Took pictures of all four sides and top, bottom. The size about 5 1/2" square and up to the rim 6", up to the top of the handle about 10 1/2". The crest on top handle looks to have been broken off but welded back on. I have two other item listed from the same estate. I can take more pictures if requested. Please look at my other auctions. Please look at all of the pictures they are part of the description and email any questions before bidding. Thank you.