The Owl © 1897 Mills Novelty.
The most popular 5-slot machine ever made.
A 5-way head sits atop the beautifully carved oak cabinet, and a circle of owls is perched on the lithographed tin wheel. Unique to this upright is a bell that rings to announce a winning payout.
Size : 68x32x21 inches.
Weight : 285 pounds.
The Owl is the first mechanical upright cabinet slot machine.
Because of its immense success, Mills Novelty later adopted the owl motif as its trademark.
Machine's picture.
Collector's Guide to Vintage Coin Machines - Richard M. Bueschel - Page 15
Loose Change Blue Book for Slot Machines [4th Edition]