A picture/postcard dealer has some shots from the mid-20's for sale on Ebay. They show twelve personal photos, I assume from a deceased's estate, of their AC which was obviously treasured by its owners. Delightful hand-written captions ‘AC’s on the coast road’, ‘On the way to Darlington’ and ‘The old 1923 AC – the 1926 AC’. I noticed one of the cars has had its front lights repositioned to the top of the wings.
Here's a link to the set:
http://www.ebay.co.uk/sch/m.html?_odkw=&item=400573707289&pt=UK_Collectables_Photographs_MJ&_osacat=0&hash= item5d440db419&_ssn=piksplus&_trksid=p2046732.m570.l1313.TR8.TRC0.A0.XAC+&_nkw=AC+&_sacat=0&_from=R40