Thinking it may be Gottlieb (of the big 3) but by how much? I guess it could be measured by both titles and/or total units made. Are all pin production numbers known? I do understand some individual game numbers are not reliable. Any way to make a ball park estimate? Ex.
X 750,000
Y 500,000
Z 250,000
Did one company make 2 or 3 times the number of pins as the next? My uneducated guess would be:
#1 Gottlieb
#2 Williams
#3 Bally