Umm.... I have those same pipes, and I don't have some special badge that is a numbered production run. Maybe I should contact Moriwaki and ask for my numbered badge now. Do you think so?
i have hi mount slip ons with a limited badge on the back of them just like the ones on that guys bike on ebay........im not saying they are special other than being mori's ... nor do they make ones bike limited... lol.... but there are some with numbered badges or maybe they all come that way because i havent seen anyone elses up close.
They originally made 300 sets and stopped production, a few years later they decided to start selling them again without the SN#'s on the tags, so they aren't limited production pipes any longer, but they were at one time.