Post 596 pictures a couple of different variants of the 2DSP eagle – the familiar threaded post / domed spinner type, and an unusual version with twin wire prongs. Here’s yet another wire prong variant, this one fastened to a wedge cap. The cap’s owner wisely left the badge affixed while taking these pics.
As an aside, the cap sports some rank insignia applied at an angle, and a cavalry pennon that I have not been able to ID. I welcome any comments that shed some light on this cap. This cap was found like this several decades ago, and there’s no indication that it is a put together or fantasy piece.