Chaps
Update on this after speaking with seller.
It is a 1952 model
Frame/engine numbers match on documents but not in reality.
Much work done, many new parts, mainly from Norvil. Engine stripped - apparently fine - new rings fitted, I think he said new crank..... Monobloc carb, new rims, ss spokes, frame powder coated, new seat, tinware/tank paintwork all new, recon mag, new bars, headlamp. tail, rewire, electronic ignition - I think, not Boyer something else - forgotten, 6V, new unused battery, he has been riding it about without it. New primary chain, new final drive chain.
Still worth 5.5K? Very aware that the lack of matching numbers is a value concern - like it or not.
Thoughts again welcome.