Technical 50's GM guys ID garnish Moldings

Bought these today and thought they were 55-57 chevy and was on the run. When i got home and looked close I get no cigar. The rear ones look like 55 sedan but shorter. They are 33.5" at longest point and the rectangle one( have only one side)has some weird cut in (the 55-7 sedan is straight up and down . It is 34.5" at longest point which i think is the top. What pray tell are they???

 

Buick? Oldsmobile?

 

did you do a google image search of cars you suspect?

 

Yup … '54 - '56 2 door sedan.

 

Best me to it, have a set of those in the garage with the matching car.

 

found a pair same on ebay looks like Buick. Are they the same for olds???