Actually he has got around 500 bikes in a basement (got 6 of them from me), he is trying to start a bikemuseum.

The brown folder (the messed up one) and the yellow one is 24" wheels. I remember somebody talked about putting 24" wheels on the R20.

The green/blue one is same make, 20". This is Norways R20, They made thousands and thousands.

The red one is a different make, "Diamant", also made alot of bikes and still do, think it is Swedish.

He is selling some second hand bikes, look at the Danish Biomega. Shaft instead of chain. http://www.denrustneeike.no/brukte_sykler.asp