The most common and most likely answer to this crossword clue is the 7 letter word CACHETS
I've seen this crossword clue in The Daily Telegraph
C
A
C
H
E
T
S
More clues leading to the result CACHETS
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CACHETS mean?
CACHETS noun- A seal, as of a letter.
- A special characteristic or quality; prestige.
- A commemorative stamped design or inscription on an envelope, other than a cancellation or pre-printed postage.
- A sealed envelope containing an item whose price is being negotiated.
- A capsule containing a pharmaceutical preparation.
- A hidden location from which one can observe birds while remaining unseen.