There were basically three versions of the approximately 955 250GTEs made between 1960-1963. I'm not exactly sure how the 7 preproduction GTEs fit into the total 955 GTEs built, but the information I have here is gathered from a number of sources, so please excuse the descrepancies. If you have any corrections or additions to the information, please feel free to e-mail me!

I hope this guide will help track these changes throughout the series.

Pre-Production 1287GT, 1895GT, 1903GT, 2031GT, 2043GT,

Series I Serial Numbers 2169-2999 (approx. 299 cars)

#2831
Fog lights were mounted inside the grille with "bee-hive" directional lights centered under each headlight. The headlight trim rings are convex in shape and mounted inside the headlight opening.

*Note: #2831 shows a hood scoop that the owner added. It is not original to the car. Most GTEs were not fitted with a hood scoop, bit rather a stainless steel ridge running down the center of the hood. The next car pictured #2953 also has a hood scoop, but its originality is not certain.

#2953

Although #2953 is in a partially disassmbled state in this picture, we can see some of the gauge arrangement. The defroster slider switches are mounted on the dash panel, and the gauges, read left to right, are: Rev Counter, Oil Pressure, Speedometer, Oil Temperature, Water Temperature, Fuel Level, and Clock. This car has electric windows which was an option for the GTE.
 

Series II Serial Numbers 3083-4093 (approx. 356 cars)

#3813
Much like the Series I cars, the tail lights are arranged vertically with individual round lights.

#3373
An Ammeter was simply added to the center console, keeping the same layout as the Series I cars. A slight bevel was added to the radio cutout so the radio would sit vertically and not on the angle of the console where On the Series I cars this panel would be flat.

This bevel is better illustrated here on my center console #5053.
 

#3813
Later on in the Series II, a fresh air vent was added to the center of the dash, so the clock was moved to a second row of gauges where the ammeter was installed. The defroster and heater vents were then moved down onto the center console to make the extra space.

Series III Serial Numbers 4097-4961 (approx. 300 cars)

#4681
Although this is a rare Right Hand Drive car, it shows the changes in the front nose of the car. The fog lights were moved outside of the grille opening and flared into the bodywork moving the turnsignal lights further out towards the edges of the car. The head light trim rings are now convex shaped, and cover the outside edge of the headlight bucket.

#4681
The Series III taillights were changed to one-piece units that are bullet shaped. Some lights (American Market?) are all red in color with clear back-up lights, but these show amber colored turn signals on top, red brake lights, and clear reverse lights.
 

330 America Serial Numbers 4953-5125 (50 cars)

#5105
Cosmetically the 330 America was identical to the Series III GTE. The fitment of the Columbo Four liter Type 209 V-12 Engine was the main difference.