The only way to discriminate all EB110's single models is to capture the car chassis number, a kind of first name that allow to make the distinction between vehicule of the same type.
EB110's models are registered with a Vehicule Identification Number (VIN) engraved in a metallic plate located near the passenger door (picture 1). Sometimes, a second plate with less informations is located near the driver door (picture 2). At last, the third one is under the engine bonnet.

passenger side platedriver side  plate

How to read the Bugatti VIN? Easy to read but some technicalities quite hard to understand ....

Only 3 parts of the complete VIN is important to identify an EB110:

- The first one is the Model type, encoded by a group of 2 letters
AB : for 110 prototypes and EB110 GT
BB : for EB110 Supersport
CB : for EB110 Supersport USA prototypes
The two numbers after the model type seems to be the engine code : 01 for GT V12, 02 for Supersport V12.


The 2 letters after this number inform about the country market where the car was sold : E0 for European market, SO for Switzerland market, U3 for the American market, G0 for Middle East one...

- The second one is the Production year, or more precisely the millesime (3 letters). In fact, the Bugatti millesime are not correspond in my opinion exactly to civil year. PCD millesime seems to cover 1993 and 1994, perhaps the Bugatti millesime starts at the middle of the year?
In order to simplify, it can give something like this:
MCD : 1991
NCD : 1992
PCD : 1993
RCD : 1994
SCD : 1995

The last one is the Chassis number, a number always initiated by 39xxx and followed by the production number. Some cars were not produced in a logical order (normally an increasing number series), perhaps due to specific client demand, that made longer the production duration (and could entail a shift between production year and chassis number).
The Supersport was registered separately from the GT, but the both started at number 39001. VIN structure seems to be the same (with BB instead of AB for the model type and 02 code engine instead 01 GT one) .

Dauer's models registration were damn obscure. Two plates are located near passenger and driver's doors.

The first plate (passenger side, picture 1) is an ungraved Bugatti plate with fanciful data : 1992 production year, AB code for GT model (the base is the Supersport in its USA configuration, so CB code), but the model area shows 110 SS. I think the role of this plate is to make a symbolic connection between Bugatti and Dauer.

The second plate (driver side, picture 2) is specific to Dauer's production, with a factory VIN. Two letters (TP), 6 fixed numbers (121411) and the chassis number (4 characters). A "Chassis" area is located on the left bottom of the Dauer's identification plate, with a mysterious chassis number... no explanation about that.