You can use any type of brass polish to clean it.
Authentic Louis Vuitton Gold Brass Lock and Key Set 312
Authentic Brass Louis Vuitton Lock & Key – SJ.PrelovedLuxury
Louis Vuitton PadLock Key Replacement LV Lock Keys Brass Gold [Authentic]
Pinkerly Special Louis Vuitton Padlock and One Key 308 Lock
Louis Vuitton Padlock and Two Keys Unpolished 311 Lock Brass
authentic 308 lv lock - Gem
LOUIS VUITTON Brass Lock and Key Set #300 228355
Guaranteed Authentic - Vintage Louis Vuitton Lock & Key circa. 1980's – Just Gorgeous Studio
Hermes set of padlock - Gem
authentic 308 lv lock - Gem