Solution for 18 June cryptic crossword clue

Petersham, perhaps, seen in outstanding film (9)

Solution – Great coat

I had a vague idea that Petersham was an item of clothing – picked up from a Georgette Heyer book, I suspect. I looked it up and found out that it was a name of a type of coat – the "greatcoat"

From there it was easy to see that great = outstanding and that "coat" is a type of film on something.

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