Crossword Clue:

Patina

AnswerCrossword Clue
FILMPatina.
FILMPatina
SHINEPatina
SHEENPatina
COATPatina
SCUMPond patina
FILMPatina, essentially
OXIDERust or patina
AGEAcquire a patina, say
GREENCORNETBrass instrument with a patina?