I recently acquired a pocket watch that belonged to my great grandmother. I don't know anything about it other than what I can see. It says "splendor" and "Swiss made" on it. I don't know how old it is or even if it's old at all. It makes a ticking noise and the hands move sometimes but only of its lying horizontally and still then not always. There is a dial on the top. Does anyone have any guess as to what I would need to repair it and how much it would cost? Would a good cleaning suffice or do you think something more is wrong?