Crossword Genius

Conservative estates managed in this case? (8)

Ross

I believe the answer is:

cassette

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'this case?' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'conservative estates managed' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'managed' is an anagram indicator.
'estates' with letters rearranged gives 'assette'.
'c'+'assette'='CASSETTE'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for cassette that I've seen before include "Container to go into tape deck" , "Vintage recording" , "sealed plastic container" , "Recording medium" , "Audio tape holder" .)

I've seen this clue in The Sun.
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