Unusually for time capsule, there's no fine material of value (8,5)
I believe the answer is:
precious metal
'material of value' is the definition.
The definition and answer can be both related to property as well as being singular nouns.
Maybe there's an association between them I don't understand?
'unusually for time capsule there's no fine' is the wordplay.
'unusually' indicates an anagram.
'there's no' indicates named letters should be taken away.
'fine' becomes 'f' (abbreviation in pencil classifications).
'for'+'time'+'capsule'='fortimecapsule'
'fortimecapsule' with 'f' removed is 'ortimecapsule'.
'ortimecapsule' anagrammed gives 'PRECIOUS METAL'.
Can you help me to learn more?
(Other definitions for precious metal that I've seen before include "no lead!" , "Eg gold, silver or platinum" , "Platinum, perhaps" , "gold, perhaps" .)