Which preposition to use with fobbing

of Occurrences 3%

And he had a new French watch and gold chain, in place of the big old chronometer, with its bunch of jingling seals, which had hung from the fob of John Pendennis.

as Occurrences 1%

He flung back his long drab greatcoat, revealing that beneath it he wore a suit of cinder-gray shade throughout, large heavy seals, of some metal or other that would take a polish, dangling from his fob as his only personal ornament.

Which preposition to use with  fobbing