As mounted on hinges? (6)
I believe the answer is:
stamps
'as mounted on hinges?' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps you can see a link between them that I can't see?
This is the entire clue.
Can you help me to learn more?
(Other definitions for stamps that I've seen before include "Gummed receipts of postal fees" , "Brings one's foot down heavily on the envelope" , "Tokens stuck on letters" , "Postal tokens" , "Items of interest to a philatelist" .)