I am not a Studebaker guy so I checked pictures and it looks like a match to the 1959-60 grilles....
These are marked as being for a '59 Pontiac Bonneville convertible. There are marks, scratches and pitting. Possibly some dings....
Good condition for age, there is light pitting. Local sale cash, $45 shipping
Some fins may be slightly bent. Some pitting. Painted areas have lost paint.
These are 3" in width. From what I can tell, the width is different between 55 and 56. Be sure...
Average wear, scratches, chipped paint. Part numbers 5955549 (LH) 5955550 (RH)
This was tagged as being an 83 bumper but I believe it works with 83-89 but don't take my word...
This grille is in average condition for its age. There is some pitting and flaking inside the fins. Paint on...