Classic BSA Bantam D3 Major - 150cc

I am selling my BSA Bantam D3 Major 150 cc which is one of the rarer varities of the model. As may be seen from the photographs it is in very good condition and has the Electrix electronic ignition. A new 6 volt battery was fitted 3 months ago.
The odometer shows 4406 miles but this is obviously incorrect. I am unable to say what the correct mileage is.
Although I would NOT describe it as a non-runner recently, for some unknown reason, it will not run without choke. It starts very easily with full choke but as soon as the vanes on the strangler are opened, the engine splutters and stops. It will immediately start again provided full choke is on.
Various suggestions have been made as regards the problem and the most prevalent are that the crankshaft seals have failed. Although mechanically proficient, I do not have the equipement, tools or skills to rectify this. Thus, I am selling it although I accept that I will lose a considerable amount of money so here is you chance to grab a bargain.
Payment by cash, bank transfer or pre-cleared cheque, whichever is most suitable to the buyer.
Collection only from Derby.