If there every was a manufacturer that made 'toy' cameras up to pro photographers' standards, it was Agfa. In The Netherlands, their little plastic boxes are still ubiquitous - and amazingly, it's hard to find one that doesn't work.
This one is an Isoly Junior (apparantly known as 'Isoly 0' in the UK), identifiable by its 'Jsoly' branding. It has a 1/30 s shutter and a fixed f/11 meniscus lens that can be switched to f/16 or augmented with a swing-in focus element for 'close-ups' at 2-4m distance.
The Isoly's standout feature is that it takes 16 4x4cm exposures on 120 roll film (not included) - making for somewhat smaller negatives than usual, but letting you get more out of a single roll. It also has a hot flash shoe - extremely advanced technology back in 1960!
If you're looking for a lomography camera, but don't like the idea of spending big money on a new Diana that was expressly made to be crappy, then this camera is ideal for you. Don't count on any light leaks, though - build quality is much too high for that! What the Isoly will do is produce dreamy, lo-fi pictures that look as though they came straight out of the '60s.
The example on sale is in beautiful condition, comes in its original eveready case, which is still in surprisingly good shape too. It has a strange Dutch custom tag attached to the hot shoe (see photo) - I left that on since it's a unique historic detail. Otherwise, it's completely ready to start shooting!