The most common and most likely answer to this crossword clue is the 10 letter word HISTORICAL
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result HISTORICAL
- Welcome state getting to grips with riots mishandled in the past
- This strange exam covers one century of yore
- . Old hard form of silica surrounds geographical feature
- Chap’s initially convicted in court case after earlier involvement of nothing from the past
- Old hit carols I broadcast
- Ancient chariot is destroyed by learner driver
- Lost chair I restored belonging to the past
- Authentic playing – is it choral?
- Old IIT scholar ill-treated
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 HISTORICAL mean?
HISTORICAL noun- A historical romance.
- Of, concerning, or in accordance with recorded history, (particularly) as opposed to legends, myths, and fictions.
- Of, concerning, or in accordance with the past generally.
- Of, concerning, or in accordance with the scholarly discipline of history.
- Forming compound adjectives with the meaning "historical/~" or "historically":