"On my UK keyboard, I have a pound symbol (Shift+3=£) , a dollar symbol (Shift+4=$) and a hash key (#). What does a US keyboard have? What do US people call a real pound (currency) symbol?"
When they have to produce one, they just pound the keyboard until it produces one, or make a complete hash of it, which then costs them dollars to replace.
I'll get my coat, it's the one with a pound of hash in the pocket that I bought for a dollar.