Glorious! I really like the Japanese compact stuff. The Wein cell might not be the best option, with an SR/LR 1,5V to 1,35 adapter usually more reliable and longer lasting? The only issue with these is sometimes their ability to provide enough current to power anything much more than a meter.
Some 1,35V cameras have an electrical shutter as well. If so, the Wein I think is your only option. Enjoy! Results soon we hope... Skj.