My car originally seems to have had small Lucas sidelamps (only one remained!) identical to those that James has just fitted to YS, also to those on the Alperton press photo. However, having only one, I looked for replacements and, failing to find any, have used those "period" ex-WD types (don't know the manufacturer) which are identical to those on the late-pattern wing you provided for James.
My Carellos are not as old as those on the link you provided: I'll try to get a better photo for you, but suffice it to say for the time being that they are almost exactly the same shape/profile/construction as the Bosch lamps, but are in between the Augusta 180mm and Astura 200mm sizes!
My Belna has torpedo headlamps (I think Marchal) with heavily domed lenses, similar to those used on the Citroen Traction 11CV. All this goes to show what a great local input was put into these old cars both in the UK and in France.
Both the Bosch (180mm Augusta and 200mm Artena/Astura) and the Carello (Ardita) lights give superb lighting patterns when fitted with the intended lamps or even with halogen replacements. All that matters is the filament positions with respect to the reflector. At this time, when these manufacturers were using twin-filament dipping lamps, Joe Lucas (King of The Road - sorry - Prince of Darkness) was still fiddling about with single filaments and a dipping reflector for the nearside light, the offside one turning off completely on dip!
If I were you David, I would hook up each of your lamps to a battery in turn and try them against a brick wall at 10 to 20ft just to see what sort of patterns result, then decide. As Don hinted, anything is really acceptable in terms of appearance. Its the light output wot matters! Whatever you use, it will be your personal choice and will form part of the history of the car (which is one reason why I have no intention of changing USK's Carellos for Bosch).