I had to copyright it. Some guy with a German ring was trying to steal it. At least that is what my attorneys are saying.
I have seen these in publications before. I have seen examples recovered individually, and I have also seen them on the neck stock, or cravat.
The first time I saw them was in an old issue of 'North South Trader's Civil War' magazine. They were in the "What Is It?" section. A fellow had found one of the stamped brass pieces with an anchor at a homestead in Tennessee. I believe the business of Stone Mountain Relics of Georgia provided the magazine with a picture of a complete neck stock in a subsequent issue. Those examples were identical to the one pictured in this thread.
I know they are out there. I looked for too long today, and I do not need my girlfriend getting jealous over Google.
I will try again later.