From the research that I've been doing on my M&S 80, I have found that Without globe, hose and nozzle, depending on signage (porcelin?) ,chrome pits and stainless conditon I think that It would be at tops about 2500. I know that a lot of restorers would love to get that much for one, but in my 1 year search I have seen a few go that high. Most likely though, I would expect 750 - 1500 to be more in line.
Hope this helps.