Both the badge and the mount are slightly off-center (each the other way)...

I'm about to do a reglue/repair on the rerings and lams that are coming apart a little and replace all my heads with Ludwig Weathermasters. I also stole the heads off of these while they weren't being used to donate the heads to our practice space...

the hoops and heads will be going back on shortly.

My real curiosity is why there are no other mount holes... would the old standard tom plate's bolt holes have matched up with the Set-O-Matic's? There's no extra holes... And the BD shell... no extra holes... ?

I can only think it was one of the Slingy kits that didn't come with the mounts installed... like the Jet or what-have you.