Hi,
It really does look like it might be a strap button. Check this discussion on TB:
http://www.talkbass.com/forum/f8/69-p-bass-strap-button-headstock-109229/
Hello,
I owned a Tokai Jazz Sound way back in the 1980's and always regret selling it. It went to a good home!
Am considering an offer on the following...