Crossword Genius

Doctor sent girl, reliable (8)

Ross

I believe the answer is:

sterling

'reliable' is the definition.

'doctor sent girl' is the wordplay.
'doctor' is an anagram indicator.
'sent'+'girl'='sentgirl'
'sentgirl' is an anagram of 'STERLING'.

(Other definitions for sterling that I've seen before include "Of the highest qualiy" , "banking standard" , "British coinage" , "Excellent - British money" , "first-class quality" .)

I've seen this clue in The Times.
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