Did not the Emperor himself provide that collar pin?
Afterwards, he presented the boy with "a collar pin made of gold."
The college insignia, its collar pin, which bears the school emblem, is worn on the left collar of shirt.
Buy yourself some collar pins while you're here.
He took in Alan's collar pins, his flag marker, his decorations.
They are required to put on a collar pin to differentiate themselves from other schools.
Students of the school also wear collar pins on the left collar.
One can easily identify which CCA a particular student belongs to by just looking at the collar pin.
He had the collar pin of an honor graduate and the second tiny chip of diamond which meant he was also an Adept.
He fingered the collar pin, possibly the most expensive personal possession he'd ever owned.