Were any kind of production numbers ever leaked for the Bally Bingos? It seems, this time period was still turning out a number of Bingo titles. Which may have been their focus instead of flipper pinball. Other than Big Valley and Firecracker, production numbers were typically 1000 or less for Bally at that time. Gottlieb fared a bit better in that period but not by too much. They had a number of titles that ran 1500-2500 units. Oddly enough, the production numbers are missing for a lot of the WMS games of that same era but had some really big hits too (4000-5000 for a few titles).

It will be interesting to hear more "inside" stories as to exactly what was going on during this period as it reflects just about the time period of games that were available in the arcades and bowling centers when I started playing pinball.