Found a Minox 35 GT in super good condition (just needs a good clean). I adapted the battery compartment to use 4 LR44 cells, that are about the same size of the
Lot 238 - Small Group of Minox 35 Items
Battery Pack for C, EC, & Most Minox 35 Cameras, and Rollei-35-LED. Batteries are included.
Minox 35 GT – Little Big Camera - Reviews - Photo Thinking