The most common and most likely answer to this crossword clue is the 5 letter word FIFTY
I've seen this crossword clue in Financial Times
F
I
F
T
Y
More clues leading to the result FIFTY
- Equally smart twins, females replacing leading names?
- & 12 & 28. Fighter’s day off? Yes – off work!
- Starts to face it — for the young this is ancient
- Motorsport supported by unknown cardinal
- Two bulls shared equally?
- Equally, it’s central for school-leaver
- Shared in centre of Dallas, capitally?
- Number 12 in force advanced by Yard
- 10 and 22d.
- Two score plus ten and half of 4
Buddy explains!

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 FIFTY mean?
FIFTY noun- A banknote or coin with a denomination of 50.
- A batsman's score of at least 50 runs and less than 100 runs.
- The cardinal number occurring after forty-nine and before fifty-one.