A black raleigh sports or triumph would be my first pic. Someone on the forum has a beautiful black sports. Or a superbe...
You could always source a gazelle city bike. Shouldn't be that hard since they are litterally pulling them out of the canals in amsterdam.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear