A Sunday Roadster Mystery ( update: 1913 Darracq, Plus (Austin) Sizaire Berwick)

This car is I believe A 1913 valveless Darracq.
It has a dash mounted petrol tank,detachable wheels,drop front axle,drop front crossmember,and square edged radiator.I have recently purchased a "barnfind" quality 1913 Darracq with similar chassis etc to this car but mine although it is a type SS13 is a Clegg engined car which were made in small numbers to use up the remainder of the Valveless chassis.My car also has the bevel drive diff not a worm drive of the 1914 model which did away with the subframe and had a straight front axle.My car also has a rounded edge to the front of the radiator.The electris would have been a specific order as Darracq only offered electrics for these models in 1914.

Thanks for the indication of the 2-str being a Darracq, probably a 12/16hp of 1913-14, presumably taken at a later date with the tax disc and addition of electric lights. Enlarging the original pic there seems to be a secondary horn on the bulkhead and I presume the curved frame, which has loops for a leather belt, could be for a vertiacl wicker umbrella holder. see http://www.hvauctions.com/Automobilia_Details.php?pid=3618&automobilia=3618_01.jpg

I believe the car with chauffeur is a 13/26 Sizarre Berwick of 1923-24.
The dumb irons and wheel/hubs look Austin 12/4. In the complete catalogue of British Cars by David Culshaw and Peter Horrobin it is quoted "In 1923 a range of smaller models was produced, this coincided with the passing of overall ownership of the company to the Austin Motor Company. The 13/26, 23/46/ 26/52 are disguised versions of the equivalent Austin models".

I find this picture of PX2093 quite perplexing. The chassis looks circa 1914 with electric lights and detachable wheels, yet the body style, and particularly the abrupt transition from the bonnet to the scuttle, seems to be several years older. Then there are the monstrous sidelamps, the air intake or horn or whatever it is on the flat scuttle panel, in addition to the bulb horn. Other curios include the item on the running board and the curved frame alongside the boot/dickey which looks like it should hold something vertically.
Who can fill in the gaps for me?

The car is definitely a Darracq, probably 1913 indeed, indicated by details on the radiator. Never seen a Humber with a round badge, by the way. All other details are in line with Darracq.
With respect to the registration number I'm tending to follow the editor in the “ … or”. The first character could be a P as well as a B or an R, the second an X but also a K (which it is in my opinion). The assumpion that it is a pre-WW1 photo leaves us with only serious combination, the BK of Portsmouth. Although car figures for these years for Portsmouth are not available, the number 2093 in the year 1913 doesn't seem unlikely.

Well-I think the wheel centres & hub "caps" do indeed look a bit Austin like. But that is a closely fitting radiator muff, & I cant see how there could be an Austin radiator cowl under it. So I rather suspect this is a very rare photo of a rare car-namely a Sizaire Berwick. But not the glorious full size version of this make. Mr. Fred Berwick decided to enlarge his range of models ( from one to two ) by buying-in Austin 12 chassis, & possibly some bodies too, & putting on a version of his own radiator & cowl. I dont think this venture was a great success, & I suspect that this car wouldnt look much better with the rad. muff off ! I think the bonnet looks rather short & unattractive, personally. I could be wrong in my identification- It could just possibly be a Windsor (another, earlier , F.W. Berwick venture ) but I doubt it-they were not quite big enough to be chauffeur driven.

The 'car with driver' is not an Austin. The radiator shape is wrong and the riveted bonnet edges are not Austin. I have not yet worked out what it is.

Did Austin purchase there rolling frames with drive train from Fiat? Because the chassis with front fenders and radiator look like my 1928 Fiat 509.........

If the number plate has been read correctly , the 2 letter prefix PX was first issued for West Sussex in April 1923 and ran until 1927 ( ending with 9383). Note the car has electric lighting which would make it post 1913 and it also seems to have a Road Tax Disc holder ?? The need to Display a Licence Disc came into force in 1921.

The first car, PX2093, is a ca. 1911 Darracq.

The first car is a Darracq, from about 1913.

PX 2093 looks very much like a Humber.