unchromed
/ˈʌnkrɒmd/Definitions
1. adjective
not plated or coated with a thin layer of a precious metal, especially chromium.
“The car’s engine was left unchromed, with its original metal surface visible.”
2. noun
a vehicle or other object with its metal surface unchromed.
“The company specialized in restoring classic cars to their original, unchromed state.”