The most common and most likely answer to this crossword clue is the 7 letter word FLORINS
I've seen this crossword clue in The Guardian
F
L
O
R
I
N
S
Buddy explains!
The straight part
We know that "coins" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case coins = florins.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 FLORINS mean?
FLORINS noun- The currency of Aruba, divided into 100 cents, symbol ƒ.
- A pre-decimal British coin, worth two shillings or ten new pence.
- A guilder (former currency unit of the Netherlands).
- Any of several gold coins once produced in Florence, Italy.
- A pre-decimal Australian, and New Zealand, coin, worth 24 pence or a tenth of a pound.