Hi, guys! I'm back,with another recent acquisition. But, this time, I'm not really sure what I've got. It's a Mamiya rangefinder, for sure. Beyond that, things get fuzzy. It looks sort of like the images of the Mamiya Crown, or Metra, or Executive, but I can't tell, for sure. The photos I can find of those models are too small to be of much use in actually identifying anything. If the attachments actually work, I apologize for their poor quality. I used my phone. On the other hand, the quality of the software that runs this place is even worse.