When I see a sign that originally had a can behind it it's often a new can. Does this hurt the value or desirability because it's not the original can? I understand the majority like their signs original but is this an exception?

Additionally, when I see a sign with a new can that I know was originally double sided with a sign on each side is it considerably less desirable when it's now a single sign on the can? I assume people will take each sign and make a can sign. 1 sign becomes 2 signs.
Does it makes sense that most collectors would prefer a single sign to mount flat?

These questions apply to both neon and non neon can signs. Just trying to gather some thoughts about what you all think?

Thank you
Michael