English, c.1860, unsigned but identical to others by Frith, the case exterior finished in French polished Figured walnut with an inlaid brass and MOP design to the top of the domed lid, lid opening to reveal the fold-up viewer, fold up glass plate holder, and cardholder to the inside of the lid, main body on fold-out triangular feet for angled viewing, case width 42cm Footnote, Frith's viewer operates in a similar way to the earlier zograscope to increase apparent depth for prints, images, and plates