I recently bought a Mamiya RB67 Pro-S for cheap. It was in a heavy trunk-like case and came with the body (needs a bit of work), a 127mm lens (needs mold cleaning), a waist level viewfinder (partially disassembled, but everything is there), and a 45 degree viewfinder (great condition!). Additionally, there were several large and heavy black metal objects that at first I didn't realize what they were, but after inspection I determined that they were a system for bulk loading film into the camera and a motor drive and electronic cable release. It looks like the motor drive piece attaches to the outside of the camera and actually presses the cocking lever and the shutter release mechanically with moving arms. I have no idea if any of it works because there is no power cable. I can't even figure out how to put it on the camera... It says it's a Beattie Converter 67 Type 67-001. Here are some photos of the set: Does anyone know anything about this setup? I called KEH and they said they used to buy them like 20 years ago but don't anymore. Is it still usable or valuable to anyone these days? The camera didn't come with a regular 120 or 220 back, so best case for me would be to be able to trade this rig for a regular back, but I'm not getting my hopes up that it's even that valuable. Thanks!