The Comet [All-Star Bell]

1. The Comet [Fancy Front] (1932)
1. The Comet [Ball Gum Vender] (1933)
1. The Comet [Fancy Front] [Side Vender] (1934)
1. The Comet [Front Vender] (1934)
2. The Comet [Deferred Pay] (1934)
2. The Comet [Deferred Pay] [Front Vender] (1934)
2. The Comet [O.K. Deferred Pay] (1934)
3. The Comet [All-Star Bell] [Front Vender] (1935)
3. The Comet [All-Star Bell] [Mystery] (1935)
3. The Comet [All-Star Bell] [Gold Award] (1935)
3. The Comet [All-Star Bell] [Gold Award] [Side Vender] (1936)
3. The Comet [All-Star Bell] (1936)
3. The Comet [All-Star Bell] [Side Vender] (1936)
4. The Comet Deluxe (1939)

Machine's picture.
Collector's Treasury of Antique Slot Machines from Contemporary Advertising - Peter Bach - Page 163
Collector's Guide to Vintage Coin Machines - Richard M. Bueschel - Page 50
The Coin Machine Journal - January 1940 issue
Loose Change Blue Book for Slot Machines [4th Edition]