From a Spanish page, a Jolly, no more information except it's described as being like a Mosquito
From Spain a Raton engine, looking like an Italian Itom (Raton = Mouse)
English made bike from 2013 using a Chinese 4 stroke and a bike that's anything between 50-80 years old. Note the lawn mower tank inside the carrier box.
BFC Røvskubber, Denmark. Exhibited in 1950, BFC had to rush to meet the demand, the first year's production was 10,000. From 1951, a Type 1, mounted on a men's Ideal. The engine was only in production 1950/1, as the Danish transport ministry started requiring all new motorcycle type registrations to have improved structures over a bicycle, following a lot of nasty accidents with broken forks and suchlike.
Diesella Røvskubber. Not really a diesel at all. The Røvskubber is a low joke. A rove, in old time Englsh boat building was a leather washer for banging a fat headed nail through. Skubber = scrubber. Now think about the proximity of the drive roller to the lower end of the rider. Right, carry on.