This part from Hirose Japan is the finest JAMMA edge connector on the market and is original equipment in almost every Japanese made JAMMA candy cabinet. Sanwa stock this part and deemed it good enough to give it it's own catalogue number: K-56H.
If you have ever held one of these in one hand and the generic one in the other, you can definitey feel the quality difference immediately. Unfortunately, as with everything, quality comes at a price and as such these edge connectors are not the cheap; however for the discerning collector, nothing else will do.
JAMMA 56 pin edge connector. 3.96mm / 0.156" Pitch. Perfect for building harnesses and convertors as well as renovating the harness on your cherished cabinet.