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Illustrated History of Connecticut License Plates
Joe Wasielewski - ALPCA Member 6996
All-Terrain
Ambulance
Amateur Radio
Apportioned
Boat Ramp
Bus
Camp Trailer to 1957
Camp Trailer 1958-
Camper
Classic Vehicle
Combination 1
Combination 2
Commercial to 1957
Commercial 1958-
Common
Construction
Dealer Motorcycle
Dealer New to 1969
Dealer New 1970-1989
Dealer New 1990-
Dealer Spec. Equip.
Dealer Used to 1969
Dealer Used 1970-1989
Dealer Used 1990-
Dismantler
Early American
Error Plates
Exp. Test
Factory
Farm
Fire Apparatus
Fish
Foreign Consul
Gasoline
Handicapped
Hearse
High Mileage Veh.
Interstate
Junk
Livery
Marine Trailer
M.F.G.
Military
Miscellaneous/Local
Motorcycle
Municipal
M.V. Dept
Parade
Permits
Political - State
Political - US
POW
Prototype
PUC
Repair to 1969
Repair 1970-
Sample
School Bus
Service Bus
Snowmobile
Special Equipment
Sphinx
State
Student Transport
Taxi
Temp. Metal Plates
Temp. Non-Passenger
Temp. Pass.
Temp. Reg. Certificate
Toll
Trailer
Trans.
Vanpool
Veteran
Volunteer Firefighter
Wrecker
Permits
These plates were issued by the Department of Transportation to oversize/overweight vehicles and trailers. They were used in addition to the regular registration plates.

The "State Highway Dept." plates started in 1949. It's reported that cardboard tabs were inserted into the slots in the plate - though I've yet to see an existing example of this. This type lasted until the early 1970s, when the "Heavy Duty Permit" type started.

The "Heavy Duty Permit" plates were flat screened plates. Later in the series, stick-on number decals were used for the serial.

Sometime in the early/mid 1980s the type was split into two categories: Oversize and Overweight.

These plates started off with Green borders and lettering screened onto a flat white plate. Reflective red number decals were used for the serial number, and regular validation decals were used - April, in keeping with the Commercial type.

Starting in 1987 or 1988, the borders were changed to blue, but still with the red decals.

Finally,  in 1989 or 1990 the plate design was changed to red borders screened onto a flat white plate, with black number decals and a revised DOT logo to the left. This was the last style of this plate issued before the type was discontinued.


State Highway Department
1959  
1959  
   

Heavy Duty Permit
1975 Heavy Duty 1980 Heavy Duty
1975
I'm not sure the 1985 decal belongs on this plate.
1980
There were once red decal numbers on this plate.
   

Oversize Permit
1988 Oversize 1992 Oversize
1988
An 'S-' prefix was used on the Oversize series.
1992
   
1993 Oversize  
1993  
   
   


Overweight Permit
1987 Overweight 1988
1987 1988
   
1989 Overweight 1989 Overweight
1989 1989
These plates were covered with a varnish or shellac to protect the number decals. Most eventually yellowed like this one.
   
1990 Overweight  
1990
This was the last design iteration of this plate.
 
   
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