Wonderful "Our Boys Colour Box" Unused 19th C Watercolor Color SetI've searched and searched and can't find another watercolor set quite like this one, or a maker of antique watercolor sets in St. Louis. However, it seems that George Osbourne, one of the few 19th century American makers of artists paint (and deemed as good as the British) produced watercolors embossed with eagles, as these are with the ones I've found dating the 1830s. I would think based on the color litho lid that these came at least a few decades