1957 Golden Hawh
For 1957 the number of models is reduced to two (2).  The Golden Hawk is retained, the only hardtop (K-body), a new name appears for the coupe (C-body) the Silver Hawk.  1956 Golden Hawk Packard engine is history, to maintain the 275 horsepower it provided, the 1957 Golden Hawk uses the 289 Studebaker V8 with a McCulloch supercharger.  This combination required that a triangular hole be be cut into the hood to make room for the supercharger.  This hole was covered with a fiberglass overlay which started near the front of the hood and continued till the hood meets the cowl.  A small gold V badge is placed on the front of the overlay.
1957 Silver Hawk
The Silver hawk’s hood is also modified, but while it did not require a hole (no supercharger) it used the hood ornament from 1956, but the hood bulge behind the air scoop would continue very close to the end of the hood near the cowl.  The grooved lower molding seen on the 1956 Golden Hawk would not appear on the 1957 Golden Hawk.  The Golden Hawk stainless-steel wheel trim is retained, but the Silver Hawk would be void of this trim.  The chrome moldings below the windshield and doors seen on 1953 to 1955 K bodies would be returned for the Golden Hawk, but not appear on the Silver Hawk.  However, the scallop indentation in the doors ,which started in 1953, would disappear for both the 1957 Hawks.  Both Hawks would sport the new outwardly canted metal rear fender fins styled by Ducan McRea.  However, the Golden Hawk would also have five vertical chevrons near the back of the fin.  New round tail lights and back-up lights would be found in a painted tail light housing.  In late spring of 1957 Studebaker would release a limited edition Golden Hawk 400.  Initially 10 show cars were built and later another 41 regular production units were built.  These cars featured true leather upholstery in tan or white and a fully lined Burtex covered truck compartment.  Something else that is unique is the accent color of the rear fins was also made present inside the side grilles in the front of the car.  The tan leather would be carried over to the 1958 Packard Hawk.  The first 10 show cars were identical, painted Tiara Gold with Arctic White fins and side grilles.  As of a few years ago, supposedly two of these have survived.  The production units were of a wider variety of colors and two-tones, supposedly eight are known to have survived.  A few (maybe as few as three) clones have been created.  The status of the survivors and clone information I found was from posts on the SDC Forum dated 2005.
 
Tells for 1957 Hawks:
The three moldings on the bottom of the side grilles on 1957 Golden Hawks (right photo) is unique to this year.  For 1957 Silver Hawks, it is not so much what you see as what you don’t see.  You will see plainly adorned side grilles (no mesh like 1958 and similar to 1956).  No fins on the back of the front fender signal lights (exactly like 1956) but placed much closer to the front of the fender.  The Silver Hawk badge (left photo) on lower right of deck lid is exactly like 1958 but a lot different then 1956 when there was no Silver Hawk.
 
 
1958 Packard Hawk
In 1958 the same line-up continued with few changes.  However, the 1958 Packard Hawk (one year model only) was released (58L-K9).  It would have nearly the same leather upholstery as the 1957 Golden Hawk 400’s (apparently the color and texture were slightly different).  The Packard Hawk featured a 53-55 rear deck, sloping fiberglass hood and a wide narrow fiberglass grille enclosure.  Gold anodized mylar overlays graced the rear fins and a imitation spare tire cover was placed on top of the deck lid.  This would be the only Hawk to ever have painted headlight rims.  Another unique feature was the vinyl tan pads that run along the outside of the windows.  Mechanically the Packard Hawk is identical to the supercharged 1958 Golden Hawk.  All

1958 Hawks (except optional on Silver Hawk six) sported 14 inch rims and tires, so new hubcaps were featured.  1958 would be the last year for front fender mounted turn signal lights and the only year they sported rear fins.  These fins were gold on the Packard Hawk and Chrome on Golden and Silver Hawks.
1958 Golden Hawk
This is also the
1958 Silver Hawk
first year in the Hawk series where a single piece driveshaft is employed.  Factory air conditioning is first offered including supercharged Golden Hawks & Packard Hawks.  The door sill plates are narrower on the 1958 Hawks and are now stainless-steel instead of aluminum.
 
Tells for 1958 Hawks:
Both Golden (Golden Hawk shown left photo) and Silver (photo below) Hawks can be easily identified in the front by rear fins on the back of the fender mounted front signal lights.  Mesh in the side grilles with no signal lights.  The very large round Hawk badge in the lower part of the front main grille.  This badge is the most significant tell for 1958 Hawks as it is the only year it would be seen.  Packard Hawks need no tells, they were actually a one-of-a-kind model.
1957 Hawk Production
 
 
 
 
1957 Silver Hawk
South Bend
Canada
Export
Total
Coupe (57G-C3) C-body Six
2,997
489
677
4,163
1Hardtop (57G-K3) K-body Six
0
0
120
120
1Coupe (57B-C3) C-body 259 V8
0
812
368
1,180
1Coupe (57B-K3) K-body 259 V8
0
152
96
248
Coupe (57H-C3) C-body 289 V8
9,461
2
144
9,607
1957 Silver Hawk Totals
12,458
1,455
1,405
15,318
1957 Golden Hawk
South Bend
Canada
Export
Total
Hardtop (57H-K7) K-body
4,131
42
183
24,356
Grand Total
16,589
1,497
1,588
19,674
1These models were only sold outside the US.  210 show units and 41 production units were built as special “400” model Golden Hawks.
1957 Hawk Serial Numbers and List Price
Model
South Bend
Canada
Price
Silver Hawk 57G-C3 Six
G-1,379,201
G-769,101
$2,142.00
1Silver Hawk 57B-C3 259 V8
8,454,101
8,962,601
───
Silver Hawk 57H-K7 289 V8
7,171,001
7,900,601
$2,263.00
Golden Hawk 57H-K7
6,100,001
───
$3,182.00
The numbers above are starting serial numbers. Except for the Golden Hawks these numbers are mixed in with 1957 Sedan and Wagon production usually by engine type, thus the first serial number listed above may not have even been a Hawk. 1These models were only sold outside the US.
1958 Hawk Production
 
 
 
 
1958 Silver Hawk
South Bend
Canada
Export
Total
Coupe (58G-C3) C-body Six
1,782
239
421
2,442
1Coupe (58B-C3) C-body 259 V8
0
0
0
0
1Coupe (58B-K3) K-body 259 V8
0
295
72
367
Coupe (58H-C3) C-body 289 V8
4241
56
0
56
1958 Silver Hawk Total
6,023
590
737
7,350
1958 Golden Hawk
South Bend
Canada
Export
Total
Hardtop (58H-K7) K-body
756
0
122
878
1958 Packard Hawk
South Bend
Canada
Export
Total
Hardtop (58L-K9) K-body
546
0
42
588
Grand Total
7,325
590
901
8,816
1These models were only sold outside the US.
1958 Hawk Serial Numbers and List Price
Model
South Bend
Canada
Price
Silver Hawk 58G-C3 Six
G-1,405,401
G-772,301
$2,219.00
1Silver Hawk 58B-C3 259 V8
8,471,601
8,965,101
───
Silver Hawk 56H-K7 289 V8
7,210,001
7,902,001
$2,352.00
Golden Hawk 58H-K7
6,104,501
───
$3,282.00
Packard Hawk 58L-K9
58LS-1,001
───
$3,995.00
The numbers above are starting serial numbers.  Except for the Golden Hawks these numbers are mixed in with 1957 Sedan and Wagon production usually by engine type, thus the first serial number listed above may not have even been a Hawk.  1These models were only sold outside the US.