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
Battery for Minox 35 GT | Photo.net Photography Forums
PILE BATTERY FOR MINOX 35 GL - 35 GT-E - 35 EL - 35 PE EUR 3,99 - PicClick IT
img_0472Inconspicuosity
Minox 35 PL - Italian Film Photography
Minox 35mm Variations
Minox Kameras
BATTERY ADATTATORE MINOX 35(GT,GL,PE,PL,EL,AL), e (C,EC,ECX,LX,TLX) EUR 9,50 - PicClick IT
Revue Rapide : Minox 35 GT - BenBer: Photographe sur Lille