As others have suggested, give it a gentle cleaning and see how much you like it at that point. You may be very happy with the look after just a light cleaning and you'll save a bundle of $$$. It's only original once, so think carefully before you strip off 90 years of patina.
If you search Oldgas, you will see posts related to getting the inside of that glass cylinder clean without having to disassemble it. Just remember that if it sits outside in the cold, you MUST keep water out of it or the water will freeze inside the cylinder and crack it. That would be a $500 mistake and a waste of an original cylinder which could be difficult to replace.
BrianH
