Hello,
Today there is a photo of Lohner R 25 on ebay at:
https://www.ebay.it/itm/GRANDE-FOTO-...gAAOSw~ShcmzbO
I'm unsure whether this is original or not as the image does appear elsewhere on the net, for example:
elhangardeyurigagarin.wordpress.com/2010/12/08/lohner-una-hidrocanoa-que-hizo-historia/
Regards,
Clint