Well done S19!
The first picture was of a Sprite Mk1 (Frogeye) which needed the panel break so that the bonnet and wings could hinge upwards. It then became the MkII, or Midget Mk1, where the wings were fixed and only the bonnet opened. In the best traditions of British engineering, no-one got round to redesigning the bodywork and this "pointless" but distinctive feature remained in place until the dawn of the 1980s!
The final picture showed it in the Midget 1500 form, with black sill, chrome trim, and the word "MIDGET" picked out in chrome on the sill.
Over to you!
.