Man, you are right. There it is. You can just see the eagle. Wow, its so cool to identify the make, year and MODEL! The eagle "decal" on this one I have is in really outstanding condition, too. THANK YOU for pointing that out! H.
Not quite sure if that is your model or not... the only one I see with a claw/hook combination is the Artist model Street Drum, but it has pass through center lugs, unlike yours which does not..... and the Legion Heir in that pic from the catalog has those center lugs as well.
Still, there's lots of possibilities..... it was a long time ago, and not every item made it into the catalogs..... some school may have placed an order for a specific config and that's what you have. Just having the eagle points to a special order of some kind.
Great drum either or whatever way it came to be among us.... yeah, I would do as you stated too... clean her up a bit, put some heads on it and play it !!