Folders are just great. Small, light, easy to carry and decent sized negatives.
Somehow I've ended up with another one - a Zeiss Ikon 524/2 6x9 with UCRF. It's in gorgeous condition, and judging by the roll hanging to dry, works well too.
It will sit alongside the Franka Rolfix II, Moskva V, Agifold, Iskra I, & Iskra II :-)