Re: The Constellation's registry number
Uh, practically everything we saw on TOS in space was a starship in some form or fashion, but the issue is whether they were of the prestigious Star Ship Class in context of TOS' universe. Kirk said there were only twelve like the Enterprise in the fleet, but more than twelve Constitution-class ships have been counted.
If it's a starship, it's a Star Ship.
"If the world was perfect, it wouldn't be." - Yogi Berra