Common people have right to silver? Thanks George! (6)
I believe the answer is:
'common people' is the definition.
(ragtag is a kind of common people)
'right to silver? thanks george' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to silver?' becomes 'Ag' (Ag is the chemical symbol for silver).
'thanks' becomes 'ta' (UK informal version of 'thank you').
'george' becomes 'g'.
'have' acts as a link.
(Other definitions for ragtag that I've seen before include "Mob" , "Untidy, disorganised" , ". . . . . . and bobtail, the rabble" , "Disorderly" , "Common people, riff-raff - ...... and bobtail" .)