Golden book in Sun perhaps? (3)
I believe the answer is:
orb
'sun perhaps?' is the definition.
'orb' can be an answer for 'sun' (I've seen this in another clue). I'm unsure of the 'perhaps?' bit.
'golden book' is the wordplay.
'golden' becomes 'or' ('or' is the name for gold in heraldry).
'book' becomes 'b' (abbreviation for book).
'or'+'b'='ORB'
'in' is the link.
Can you help me to learn more?
(Other definitions for orb that I've seen before include "Heavenly body" , "The World" , "Spherical symbol of monarch's power" , "Sovereign artefact" , "component of royal regalia" .)