Last of the SIIa. The headlights moved out into the wings for the last year or two of the IIa, with a reshaped metal grille (not the plastic version that the III got).
It also has the "deluxe" bonnet that later became standard on the III and the "tropical roof" - the extra panel that sits on top of the strengthening longerons.
The reversing lamps are from later coil sprung LR and it also has freewheeling hubs (look like AVM).
Haven't looked at the dealer's website, just observing the photos shown on page 2 (missed them earlier).