Steve -
Your comment about cufflinks made me thing of another artifact that has an unknown origin. It took a long search, but the artifact is called 2-9-S-75 and is referred to as "dragonfly". Some have suggested it is part of a vacuum tube, but being made of brass (I think) excludes it (brass would outgas in a vacuum rendering the tube unusable). Could 2-9-S-75 be part of a fancy cufflink? I am unable to find a clear picture of 2-9-S-75 on the website, only a sketch.