Peep-Show 'Der Gesang'

German, of vertical construction, printed paper covered wood body with lens and mirror at top, 14" high. The back opening to reveal a hand-coloured printed proscenium through which are viewed twelve 4 1/4 x 5 1/2" hand-coloured engraved views: 1. Scotswood Brücke (the Scotswood Suspension Bridge was completed on April 16, 1831) 2. Petersburg 3. St. Markusplatz in Venedig. 4. Nonnenwerth am Rhein 5. Bonn am Rhein 6. Dom in Mainz 7. St. Denis 8. Appleby Westmorland 9. Trient 10. Jungfrau in der Schweiz 11. Königl. Palais in Berlin 12. Ravenna Ex Spira Collection. A rare optical toy in very good condition.