real 32 bumpers are extremely tough, made from a spring steel. The back side is rough finish like hot rolled strip.(which it is). Real ones may or may not have a stamped symbol on the back side, mine has an X and the other one has a diamond. Real ones do not have the washer inside the knuckle. real ones have a nice curve near the end as it approaches the knuckle. Almost all real ones have cracks at the bolt holes. Look for welding repair on back side. Real ones have a large knuckle or many have a slightly smaller knuckle.
Reproductions: Not spring steel, bend easily. Have very smooth back surface. Do not have any symbols stamped into them. All have small knuckle. All have washer inside knuckle. Seldom or never have bolt hole cracks or signs of repair. All have a kink near the end (about 9 inches) before it reaches the knuckle instead of a nice curve.
Real ones look different than repros once you know the difference.
Real ones are available, they will need replating, (and crack repair).
My opinion, and owner of 3 real 32 bumpers