I've been putting together a guide for pinball coinboxes. I added what I could, but I don't have complete coinboxes for all my machines.
http://www.pinwiki.com/wiki/index.php?title=Coinbox/Cashbox_Identification_Guide
If anyone has any of the coinboxes that are missing photos, could you post some photos of them?
The guide is missing all DMD games, Most EM games, Williams games, Gottlieb 80A, Gottlieb 80B, Gottlieb System 3, Stern MPU-100, Bally 6830, Game Plan, Allied Leisure (Gen2), Chicago Coin, Data East, Atari Superman, and Zaccaria.