Solved -PJ586- You were ready for that!

[João]

Merkel (1) : MERKEL — Milwaukee, Wisconsin — (1905–1907) — Early in 1901 Joseph F. Merkel bought out the Layton Park Manufacturing Company in Milwaukee and moved his Merkel Manufacturing Company into the premises. Production of motors, bicycles and the "Flying Merkel" motorcycle followed — in September of 1904 he changed his firm's name to Merkel Motor Company and moved his enterprise into the automotive field.

Next : 12934 please.

+23
12934:ROLLSMOBILE 

Rollsmobile : Starts Manufacturing Company in Fort Lauderdale (Florida), 1958-1960 : Oldsmobile Curved Dash and Ford replicas.

Next : 493 please

[Paul Jaray]

10199: METZ (2)

May I have the time range ?

Just 1909.

[D-type]

4250: too close to your 4300.

My calculator says 4300-4250 = 50  which I thought met the rules

Can I change to 4249 which is 51 away from 4300?

[pguillem]

10199: METZ (2)

May I have the time range ?

Just 1909.

I can't find anything different from the Metz Company active from 1909 to 1921.  May I have #11550 ? Thanks.

[Paul Jaray]

4250: too close to your 4300.

My calculator says 4300-4250 = 50  which I thought met the rules

Can I change to 4249 which is 51 away from 4300?

You can keep your calculator, then, it works good. 
..but the rule is more than 50, and 51 is perfect.
4249:DE CRISTOFORIS

[Paul Jaray]

Merkel (1) : MERKEL — Milwaukee, Wisconsin — (1905–1907) — Early in 1901 Joseph F. Merkel bought out the Layton Park Manufacturing Company in Milwaukee and moved his Merkel Manufacturing Company into the premises. Production of motors, bicycles and the "Flying Merkel" motorcycle followed — in September of 1904 he changed his firm's name to Merkel Motor Company and moved his enterprise into the automotive field.

Next : 12934 please.

+23
12934:ROLLSMOBILE 

Rollsmobile : Starts Manufacturing Company in Fort Lauderdale (Florida), 1958-1960 : Oldsmobile Curved Dash and Ford replicas.

Next : 493 please

+22!
493:AMECTRAN

[Paul Jaray]

10199: METZ (2)

May I have the time range ?

Just 1909.

I can't find anything different from the Metz Company active from 1909 to 1921.  May I have #11550 ? Thanks.

Not that.
This was a Minerva-engined 3-wheeler from Amsterdam.
11550:PARIS

[D-type]

4249:DE CRISTOFORIS

I can't find anything apart from a carburettor

Can I try 1070 instead please

[pguillem]

11550:PARIS

Are you referring to the Symetric-Paris from 1953 ?  My next choice will be #11600.  Thanks.

[faksta]

Not that. 

Force Protection? 

[Paul Jaray]

4249:DE CRISTOFORIS

I can't find anything apart from a carburettor

Can I try 1070 instead please

Luigi De Cristoforis's carbutrettor...he built a 'macchina igneo-pneumatica' in 1841 too, slightly off-topic here, but filed as well.
+21
1070:AUTECH (1)

[Paul Jaray]

11550:PARIS

Are you referring to the Symetric-Paris from 1953 ?  My next choice will be #11600.  Thanks.

Not that.

[Paul Jaray]

Not that. 

Force Protection? 

Not that.

[Otto Puzzell]

Wise choice...
Kings County Automobile Company, incorporated in Brooklyn, New York in 1903.
8555:KLINGENBERG

*sigh*

Another pass. I can find multiple references to an engine/axle he designed, but no car.

[Paul Jaray]

Wise choice...
Kings County Automobile Company, incorporated in Brooklyn, New York in 1903.
8555:KLINGENBERG

*sigh*

Another pass. I can find multiple references to an engine/axle he designed, but no car.

...it can be enough, tell me more. 

[faksta]

Not that.

I'll pass on this one then 

[João]

Merkel (1) : MERKEL — Milwaukee, Wisconsin — (1905–1907) — Early in 1901 Joseph F. Merkel bought out the Layton Park Manufacturing Company in Milwaukee and moved his Merkel Manufacturing Company into the premises. Production of motors, bicycles and the "Flying Merkel" motorcycle followed — in September of 1904 he changed his firm's name to Merkel Motor Company and moved his enterprise into the automotive field.

Next : 12934 please.

+23
12934:ROLLSMOBILE 

Rollsmobile : Starts Manufacturing Company in Fort Lauderdale (Florida), 1958-1960 : Oldsmobile Curved Dash and Ford replicas.

Next : 493 please

+22!
493:AMECTRAN

The Amectran Exar-1 was an electric car developed by Edmond X. Ramirez, Sr. in 1979. The car was described by Amectran to be the "world's first real production, electronic powered automobile".  Pietro Frua bodied.

Next : 15670

[Paul Jaray]

Not that.

I'll pass on this one then 

This Force was a 7.5hp, built by C. P. McClellan from Fall River, Massachusetts around 1905.

[Paul Jaray]

Merkel (1) : MERKEL — Milwaukee, Wisconsin — (1905–1907) — Early in 1901 Joseph F. Merkel bought out the Layton Park Manufacturing Company in Milwaukee and moved his Merkel Manufacturing Company into the premises. Production of motors, bicycles and the "Flying Merkel" motorcycle followed — in September of 1904 he changed his firm's name to Merkel Motor Company and moved his enterprise into the automotive field.

Next : 12934 please.

+23
12934:ROLLSMOBILE 

Rollsmobile : Starts Manufacturing Company in Fort Lauderdale (Florida), 1958-1960 : Oldsmobile Curved Dash and Ford replicas.

Next : 493 please

+22!
493:AMECTRAN

The Amectran Exar-1 was an electric car developed by Edmond X. Ramirez, Sr. in 1979. The car was described by Amectran to be the "world's first real production, electronic powered automobile".  Pietro Frua bodied.

Next : 15670

Yes!
+21
15670:VICTORIOSA

[targhediferro]

Ducroiset & Fils, Grenoble 1897-1900.
My next choise is 4350...(just to see if D-Type is luckier in choosing the right numbers more than I'm unlucky)

[Paul Jaray]

Yes!
+21
4350:DEHART

[targhediferro]

Ducroiset & Fils, Grenoble 1897-1900.
My next choise is 4350...(just to see if D-Type is luckier in choosing the right numbers more than I'm unlucky)

Yes!
+21
4350:DEHART

As I was afraid...I'm unluckier (I've cut myself out from Delage and Delahaye chances)

[João]

I can´t find... #1025 please.

[Otto Puzzell]

Wise choice...
Kings County Automobile Company, incorporated in Brooklyn, New York in 1903.
8555:KLINGENBERG

*sigh*

Another pass. I can find multiple references to an engine/axle he designed, but no car.

..it can be enough, tell me more. 

"The one real novelty in this line is the device of Professor Klingenberg, exhibited by the Motor Babrik Pasig-Munich, in which the motor, inclosed (sic) in a dust-proof sheath, rests upon and is geared directly to the rear axle of the carriage. The axle is in two sections, connected at the center by a complicated devise, the details of which are show in the foregoing cut, and which provide for differential motion as between the two hinder wheels and couplings for different rates of speed."

[pguillem]

11550:PARIS

Are you referring to the Symetric-Paris from 1953 ?  My next choice will be #11600.  Thanks.

Not that.

Is it the Breese Paris Teardrop Roadster from 1911 ? If it's not, I give up.  Maybe #11810 ?  Thanks.