A great many of the parts are unusable. The engine is unnumbered. The crank might not be useable. The cylinders are bad and have broken fins.
If it were in the US and titled and someone would deliver it to me, I would give $1500. It would take another $9000+ to get it ready for sale and it would be a tough sale since it's not matching numbers. Late last year I bought a Combat and a 74 850 in that condition but both matching numbers and titled and delivered for $3000. He wanted $2200 each, but was happy to get both gone in one trip for $3000.
This one has been for sale for about two years and could be had for about $4250+shipping which is still around $1000 too high (that's why I don't own it). It's certainly not a good bike, but is matching numbers, titled, and WAY better than the one in the UK ad:
Find many great new & used options and get the best deals for 1973 Norton 850 Commando 2459 at the best online prices at eBay! Free shipping for many products!
www.ebay.com
He had this one and a running/riding, matching numbers, titled, but messy Combat. I offered $6000 for the pair about 6 months ago - he countered at $8000 - too much. My rule on offers - I make one and if not accepted, I didn't need it anyway!
Question: Do junk basket cases go for that kind of money in the UK?