Some time ago I picked up a boy's bike form the curb. My guess is that this used to belong to some family that got relocated to the US from abroad since the tires had a different type of nipple than a typical "US" bike. It has a name, I just can't remember it. It has a metal insert that is covered by a piece of rubber tubing and is kept in place with a nut of sorts. The bike also had a dynamo attached to the front wheel that fed a light. My son has used it for a couple of years but now it's too small for him. I am curious whether I can sell it for more than a couple of bucks. Do you think it's more valuable than your average bike? it's in OK shape: has some minor rust etc but is fully functional.