Solved -PJ586- You were ready for that!

[Paul Jaray]

948 please

ASTRESSE

The Astresse, powered by a licence-built Grivel engine, was manufactured in 1898 in Levallois-Perret.  It was probably the first car made in Levallois-Perret where the Citroen 2CV was later made for many years

Very good!
It was not easy...it's reported in very few sources.
+21

[Paul Jaray]

1011

AUBURN (2)

My first guess is:

Auburn Automobile Co.;  Auburn, Indiana

Not that...

Auburn-Cord-Duesenberg Co. from Oklahoma?

Perfect! +23 for you!

[João]

An engine tuning company and repair shop, but I think you´re looking for Jochen Arden, Arden Automobilbau GmbH, Germany. Jaguar, Range Rover performance kits.

[Paul Jaray]

Number 12435, please.

RATCLIFFE

[Paul Jaray]

http://www.youtube.com/watch?v=7mHe6FMs46o

(if you don't want to click, I vote for 666)

ANDREOLI

Do you mean the coachbuilder?

I can't give clues unless you ask for them...but they are 4 and in a precise order (when available...)

There was an Andreoli, who was a racing driver for Isotta-Fraschini in 1922. I think you meant him

I saw that your previous one was a guess and not a request for a clue (I did not see the picture!).
Intereting, I have not that Coachbuilder in my archive, so it's wrong. Unfortunately I don't know if the Isotta-Fraschini pilot is the same that I have...it is a pilot and the only info I have is a small caption in a book!
-3 for the guess, but I gave you a clue if you want to proceed.

I don't know his first name, but he raced with Bianchi and Felice at the 1922 Coppa del Lazio. Is it him?

I don't know...as I wrote before some names are pretty known and well documented...others names are very, very obscure. In this case you pick a car probably built by the pilot who is running it in a competition that is not 1922 or near...I just have a caption in a picture...you can decide to keep searching for it asking for clues or leave it and pick a new number. I'll reveal what I have once a name is unsolved.
It's a game of knowledge but also of luck...

Uh, pls give me one clue

OK, the picture shows a race in 1948 circa, so that's the only date I can provide about.

[Paul Jaray]

An engine tuning company and repair shop, but I think you´re looking for Jochen Arden, Arden Automobilbau GmbH, Germany. Jaguar, Range Rover performance kits.

Not an engine tuning company. They built some models.
Not the German Arden...-6

[Wendax]

Number 12435, please.

RATCLIFFE

Clay Ratcliffe built 27 ATVs by the name of Ratcliffe 6x6.

[pnegyesi]

ANDREOLI

Uh, pls give me one clue

OK, the picture shows a race in 1948 circa, so that's the only date I can provide about.

Pietro Andreoli?

[targhediferro]

Uhmmm....Century is so a common name that could be linked to many marques; I will start with: Century Engineering & Motor Co Ltd (Cheshire and London- 1899-1907).

[João]

Time range please! 

[Tom_I]

Can I try 14750, please?

TAYLOR (7)

Could I have the time range, please?

[Paul Jaray]

Number 12435, please.

RATCLIFFE

Clay Ratcliffe built 27 ATVs by the name of Ratcliffe 6x6.

Not that...

[Arunas]

Next, please: 888.

[D-type]

My next number:  1172

[Paul Jaray]

ANDREOLI

Uh, pls give me one clue

OK, the picture shows a race in 1948 circa, so that's the only date I can provide about.

Pietro Andreoli?

I don't know...as I wrote, some of the names in my index are quite obscure...but not for you to find, they are obscure for me too!
The only way you can find it is if you burn your 2nd clue (and I'm sure you don't need to know the nationality!) and I'll skip the 3rd clue (that I do not know) to give you directly the 4th, that in this case is the source, that is a book. Now, if you want, I can go to the 4th clue and take 2 credits or you can lose 10 but start again with an easier name...

[Wendax]

Number 12435, please.

RATCLIFFE

Clay Ratcliffe built 27 ATVs by the name of Ratcliffe 6x6.

Not that...

Then it could be the British race driver Harry Ratcliffe, quite successful with his Mini Coopers in the 1960s.

[pnegyesi]

ANDREOLI

Uh, pls give me one clue

OK, the picture shows a race in 1948 circa, so that's the only date I can provide about.

Pietro Andreoli?

I don't know...as I wrote, some of the names in my index are quite obscure...but not for you to find, they are obscure for me too!
The only way you can find it is if you burn your 2nd clue (and I'm sure you don't need to know the nationality!) and I'll skip the 3rd clue (that I do not know) to give you directly the 4th, that in this case is the source, that is a book. Now, if you want, I can go to the 4th clue and take 2 credits or you can lose 10 but start again with an easier name...

I opt to lose 10 and start again with Number 13

[Paul Jaray]

Uhmmm....Century is so a common name that could be linked to many marques; I will start with: Century Engineering & Motor Co Ltd (Cheshire and London- 1899-1907).

Not that...

[Paul Jaray]

Time range please! 

2011 is the date I have for theyr current models. I know that in 2009 the company was active.

[Paul Jaray]

Can I try 14750, please?

TAYLOR (7)

Could I have the time range, please?

Very good...it's a game of luck and knowldege but also a bit of strategy can be helpful: with 1 credit you can probably save 3 (or 10!)

1927-1930

[Paul Jaray]

Next, please: 888.

AS (1)

[Paul Jaray]

My next number:  1172

AUTOLETTE

[Paul Jaray]

Number 12435, please.

RATCLIFFE

Clay Ratcliffe built 27 ATVs by the name of Ratcliffe 6x6.

Not that...

Then it could be the British race driver Harry Ratcliffe, quite successful with his Mini Coopers in the 1960s.

Not that...

[Wendax]

Then I take the time range clue for the Ratcliffe.

[Arunas]

Next, please: 888.

AS (1)

Oh my... 

Let's try this one:

1926-1928 Voiturettes Automobiles AS, France