What C3PO greeblies are this?

[ywingfighter]

Anyone had an idea what greeblies are this? Found alot of 3D ones but no original parts.

 

[CatfoodRob]

I believe most of this sort of greeblie on c3po were custom machined by Mitchell engineering , not a found part .

 

[Synz314]

The C3PO Builders forum and FB group might be able to identify it.