Just curious about this topic. The Original Horse Head Mills Bonus came out in 1937 (if my info is correct), then apparently in 1939 an "Improved" version was released, according to many books, including Richard Bueschel's Vintage Guide to Coin Machine.
My question is, what was this improvement? I've seen a few Mills BONUS machines some early ones and later ones, as far as I can see there is no difference!
Some people say there were issues with the actual Bonus mechanism. Please if anyone can throw some light on this "Improvement", or pictures even better, I'll be able to sleep again!!
Thanks
Mark
UK
