I'm sorry I didn't get back to this sooner, but for daddynowhere, I looked at several 60s Star catalogs and found all these parts here and there in the Star lineup. The turnbuckle floor tom leg receivers with their straight legs and bizzarro washer-thin eye-bolts and standard Star wingnuts. That tom mount, bass plate and tom plate, the strainer and mufflers etc. are all found in the Star catalogues. Even the cymbal arm receiver block is stock Star parts.
The 3-ply shells are also a match for my US Mercury Star set (now sold).
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EDIT : Oops. Upon closer inspection, I am not finding them in the Star cats after all. I saw them googling Zim Gar. Mystery unsolved!