Blue Seal Self Loading Jack Pot Bell [Style 40] © 1929 Watling Manufacturing Co.
Nickel Play.
Blue Seal Self Loading Jack Pot Bell [Style 40] was sold $80 in 1929. The new price in 1930 was $65.
Also released as a Quarter Play model called "Blue Seal Self Loading Jack Pot Bell [Style 50]".
Collector's Treasury of Antique Slot Machines from Contemporary Advertising - Peter Bach - Page 30 & 47
Loose Change Blue Book for Slot Machines [4th Edition]