Dress shirt collar pin?

[Shaney777]

Hi all,

I am trying to figure out the official name for a pin that is worn on the collar, but looks the same as a lapel pin. I have searched Google images and haven't found one person with a pin on their collar. It keeps bringing up the long pins that hold the bottom of the collar together. This is not what I want. Are there any pins that are worn on one side of a dress shirt collar? Like say, an anchor pin to be worn on one side of a collar? Is this acceptable to wear?

Thanks