Ive got a rusty 2 piece escort prop sitting in my garden is it any good for anything or shall i bin it..

Get it on ebay - someone will buy it!

I cant be bothered to post it otherwise i would.

is the nose section that goes into the gearbox salvageable (with a little fine emery paper??)

If so, cut the front and back ends off. You can then get a prop made for about £50 by getting the propshaft place to reuse the old ends, unless the bearings are knackered in which case it's scrap.