Sorry bro-I don't know how I missed those(the pics).
Ludwig had a slew of serial number-less badged drums (no serial number but with full badges) from that time period and when you said "without a serial number" I assumed you meant one of those. It would be a thrill to see a brass Supra from that time period that didn't have the clipped badge.
I don't have any insight to offer here, but I have to say I do love this forum. I had no idea Ludwig made a black drum that wasn't a Black beauty other than the Blackrolite...
...And as if on on cue, here is a 70s B/O badged COB full-badged no serial (though one written in by hand) 5x14. No B stamped above the tone control btw..
There might be a B stamped behind the buttplace perhaps.
