Unrestricted and old, ring about a writer first (4,2,3)
I believe the answer is:
open to all
'unrestricted and old' is the definition.
I know nothing about this answer so I can't tell whether this works.
'ring about a writer first' is the wordplay.
I cannot really see how this works, but
'ring' could be 'o' (letter resembling a ring) and 'o' is present in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found in the answer.
'writer' could be 'pen' (something which writes) and 'pen' is found within the answer.
The remaining letters 'toll' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for open to all that I've seen is " Anyone may visit in Apollo Ten".)