Identification Numbers !!
Prior to the conception of Chevrolet, Buicks
were tested on public roads. There was no body on these Buicks
but the employee, sitting on the gas tank, occasionally realized he was
perched on a vehicle valued at two years wages. When GM instituted
ID numbers, they realized that they were missing about 6 Buicks a
week. Occasionally the employee would show up the next day for work,
not mentioning the missing Buick. With ID numbers, this practice
stopped abruptly. All GM Vehicles carry a Chassis plate and a body
(missing from above) GA = Master Deluxe with knee action ifs.
If you own a single unit Martin-Parry
bodied truck, the plate is located where you step on when you enter the
right door has the 3 body numbers somewhere in all those numbers.
The Fisher Coupe Pickup box and Martin-Parry double units had a body tag under the bed that has probably fallen off a long time ago.
Passenger cars made by Holden have a plate on Left side of cowl under Bonnet.
Passenger cars made by Fisher have a Plate on Right side of cowl under Hood.
See the Taxi located in foot note above and Ambulance and Suburban in foot notes below. They refer to Special Parts book.
These numbers are located on a plate that the passenger steps on when entering a single unit truck. It is under the box on a Coupe Pickup. On the optional canopy top for pickups, it's located under the right front. I have never seen one on a double unit truck but one fellow says he found one with the correct number (XXX415) on the cowl of his pickup where the Weight Plate is usually found.
Zone = 6 for Oakland, for example. Date = Assembled. Body Type = 6 numbers. The first 3 are unknown. The last 3 numbers correspond to the above body identification. The first 3 do not correspond to a paint number.
It is attached with 2 of the 4 nail holes on wooden trux and with 2 of the same hex & clutch head screws that hold the ID plate on your cowl, on metal trux.
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Okay, The following covers the time frame being discussed.
1 = Flint
2 = Tarrytown
3 = StLouis
5 = Kansas City
6 = Oakland
8 = Atlanta
9 = Norwood
12 = Buffalo,N.Y.
14 = Baltimore
20 = Los Angles
21 = Janesville
In 1953 The serial number system, with reguards to assembly plant identifiers, changed. The 1953 serial numbers looked like this:
53A = Atlanta
53B = Baltimore
53F = Flint
53J = Janesville
53K = Kansas City
53L = Los Angeles
53N = Norwood
53O = Oakland
53S = St. Louis
53T = Terrytown
Over the years the Plant identifiers changed due to assembly plants being added along with the mix that came as a result of GMAD being formed.
A = Lakewood
B = Baltimore
C = Southgate
D = Doraville
F = Flint
J = Janesville
K = Leeds
L = Van Nuys
N = Norwood
R = Arlington
S = St. Louis
T = Tarrytown
U = Lordstown
V = Pontiac
W = Willow Run
Y = Wilmington
Z = Fremont
1 = Oshawa (yes, that's a one)