Powder finish versus anodizing was an eye-opener: powder supplies rich appearances and shade deepness

https://www.scribd.com/document/1039773992/Finials-That-End-Up-Well-100-Years-of-Copper-Integrity-146161

Powder finishing versus anodizing was an eye-opener: powder supplies abundant appearances and color deepness, while plating reveals light weight aluminum's metal clearness with phenomenal UV sturdiness.