Blue Seal © 1931 Watling.
Quarter Play. Twin Jack Pot. Front Vender.
Style 92
Selling price by years :
1931 - $110
1931 - $90
1932 - $80
1933 - $70
1934 - $55
Also released as a Dime Play model called "Blue Seal [Twin Jack Pot] [Front Vender] [Style 82]", and as a Nickel Play model called "Blue Seal [Twin Jack Pot] [Front Vender] [Style 72]".
Machine's picture.
Collector's Treasury of Antique Slot Machines from Contemporary Advertising - Peter Bach - Page 63, 64, 83, 122