I can't imagine a situation where it would matter if it were an original or photocopy. People sign faxes every day and those are legally binding. People even sign digital touch pads with a nylon stylus and that is legally binding.The GC may be testing your business skills with this. Write the contract! Write it fair and equitably! Make sure it is signed in RED ink. That way any judge will know if one is the original or a photocopy!