Fs - stock 1983 Marshall jcm 800 4104 50w combo

Hi all
Have posted this in Marshall amp forum as well.
I am considering selling my first amp - a 1983 JCM 800 4104 combo. Basically a 2204 in combo form. It is quite a sought after model with the favoured vertical inputs and better G12-65 speakers. It is unmodded, recently serviced with replaced EL34s (I have the originals). It has a few cosmetic scars of age on the tolex but it is a beautiful, very loud, amp. I rarely get to play it nowadays as it is too loud for the kind of venues my band plays and it seems a shame to be sat there unplayed. I am struggling to ascertain it's value. My amp tech valued it up to £950 but it is hard to find them for sale and so I don't know if this is under or over valued. I have some pics but don't know how to attach them here! If anyone is interested, I'd rather discuss sale to a real Marshall fan rather than someone random on ebay. I'm still in two minds about selling it, but I thought I'd guage interest. I'm in London, Uk and would be for collection only as it is a heavy beast, and then you can test it.
Cheers all
Matt