camelbacks are unique. like Stingray fastbacks and certain lightweight 26" Schwinns where the same bike is available with a curved top bar and a shorter seat tube. there is not another exact bike with a curved top tube and no other bars.
I wish I had a picture of the 50's 26" I mentioned. it is an original paint bike. everything is the same except no lower bars. the same individual frame parts could be used to build a DX, cantilever or straight bar bike. I bet it was the "Price leader" to get people in the store with a cheaper price oin order to upsell the more expensive model.
this is a camelback. that's how I got it figured anyways.
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