Production

YearModel
Production Span
Units Assembled
1928
51
11/1927 – 10/1928
22,275

Note that model 50 production ended December of 1927, where as production of the model 51 started in November of 1927. The overlap in production of models is likely the result of using up excessive model 50 body inventory.

Production breakdowns for the various body styles do not exist.

Car and Engine Serial Numbers
Year
Model
Serial Number Detroit
Serial Number CA
Engine Serial Number
1928
51
5,025,001 to 5,047,400
(No model 51’s were made in CA)
F9-100,001 to 139,900
(this number is for both 1928 and 1929)
On early models (up to serial number 5,001,494 on Detroit cars), the serial number was placed on the instrument panel.  After that, it was put on a plate that was attached to the left frame rail under the front fender.  The body number and body code were put on a plate that was attached to the corner (left side of the engine) on the firewall.  The engine number of the Model 50, 51, and 52 was stamped on an aluminum plate attached to the left rear side of the engine.  On the Model 53, the engine number was stamped on a boss located on the right side of the engine just above the water jacket cover plate.

1928 Erskine Specifications

Year
1928
Model
51
Bore
2 3/4
Stroke
4 1/2
Cubic Inches
160.4
Horse Power
43
Wheel Base
107
Tire Size
29 x 4.47

1928 Model 51 Body Styles

Body
Passenger
Body Code
Wheels
Price
Weight
Club Sedan (2dr)
5
F
Wood
$795
2,365
Sedan (4dr)
5
W
Wood
$885
2,425
Royal Sedan (4dr)
5
W
Wood
$965
2,445
Sport Coupe w/rumble seat
4
EWood
$965
2,365
Tourer**
5
T
Wood
$915
2,300
Business Coupe
2
Q
Wood
$895
2,265
Sport Roadster w/rumble seat
4
J
WIRE*
$965
2,305
Cabriolet***
2
E
Wood
$845
?
Cabriolet***
4
E
Wood
?
?
Screen Delivery***
2
B
Wood
?
?
Panel Delivery***
2
B
Wood
?
?

* Except for the standard wire wheels on the Sport Roadster, wire wheels were not strongly promoted for the Model 51.
They were available on special order for an extra charge.  Later in the year they listed for an extra $35.  This price would have taken some models up to $1,000, something Studebaker was trying to avoid.

**Later in the year listed at $835.

***Mid-Year models.