SMALL AMERICAN "AERO-FAN". MADE BY AEROFAN COMPANY OF CHICAGO, IT OPERATES BY PUSHING DOWN ON THE METAL THUMB PLUNGER. THE CELLULOID PROPELLER BLADE COMES OFF FOR EASY STORAGE. ORIGINAL BOX. (SEE "CELLULOID HAND FANS" - CYNTHIA FENDEL - PAG. 49 N. 83. THIS EXAMPLE IS THAT ONE REPRODUCED ON THE BOOK). 1920 CA. CM. 11,5.