ADVERTISING BOOKMARK - CROWN PIANO
lithography on celluloid | reverse side shows factory image of Geo. P.
Bent, Crown Pianos & Organs, Chicago, USA | 7 cm
celluloid bookmark of the Victorian era in the die-cut shape of an owl
with a page-flap below the beak.
Celluloid is the first thermoplastic which came in use in 1860s
and was employed to produce many Victorian bookmarks.