Plucky types opened Pinot and fantastic claret (7)

I believe the answer is:

plectra

I'm a little stuck... Click here to teach me more about this clue!

'plucky types' is the definition.
(I've seen this before)

'opened pinot and fantastic claret' is the wordplay.
'opened pinot' becomes 'p' (I can't explain this - if you can you should give a lot more credence to this answer).
'and' means one lot of letters go next to another.
'fantastic' is an anagram indicator.
'claret' anagrammed gives 'lectra'.
'p'+'lectra'='PLECTRA'

Can you help me to learn more?

(Other definitions for plectra that I've seen before include "Parts for harpsichord" , "Guitar picks" , "Plucky types" , "Bits of plastic maybe" , "Guitar plucking aids" .)

I've seen this clue in the Irish Times (Crosaire) and The Irish Times.

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