"Small dent" says the seller!
Dropped onto concrete to put that much of a flat spot on the barrel I'd guess, unless Type 1's used aluminium? TeleVues must be really well-built if an impact like that hasn't knocked the lenses inside out of alignment.
I doubt it has any collector value in its present condition, so it's worth whatever somebody is prepared to pay. I can't see you getting one for $100 in near mint condition with box though.