Yes exactly Three companies Pearl, Star (Hoshino gakki), and Hoshino
all making drums separate of one another
from the beginning of the Japanese import explosion
Each marketing the various models of drum kits they produced
With their own separate and distinct badges and labels (and many with no badges at all)
at the behest of the different music stores and distributors of the day
after a time it seems apparent that at least some of the distinguishing hardware usually exclusive to just one of the three
had somehow been overlapped and sourced out between all three
They all continued in parallel to each other right up to the point where Star dropped out of the stencil drum making to re-tool as Tama
Any demand for stencil kits bearing any of the former Star made badges
was fulfilled by the two remaining stencil makers namely Pearl and Hoshino
By just simply making their own product and applying thin foil sticker type badges with the former Star names reproduced on them That is why we have Star made Tempos and Pearl made Tempos
correction in most cases the replacement badges for the former Star made labels
were just thin foil stickers
but Pearl at least at first used metal and plastic badges as well as the foil