Just thought I would follow up on this topic, My search for a cookie jar came to and end the other day when I stumbled upon this cobalt glass jar in the thrift store for three bucks. Not antique, but a perfect match with the rest of the cobalt glass in the kitchen, ideal size for the Hoosier. The jelly jar latch does a great job of keeping cookies fresh too!
It's marked "Farm's Products" on one side, "Products du Champagne" on the other and "Made in Italy" on the bottom. No idea what was in it originally.