Can anyone identify the maker of these parts? Also, what might these parts be worth?
A few more questions about pic 1:
What is the piece at top middle used for? I've seen them, but have no idea what they would be used for.
Is the piece at top right a Slingerland part?
The parts on the bottom appear to be BD hoop mounted spurs or anchors, is that correct?
Pic 2 is a close-up of the key at middle right in pic 1. As you can see, it has the old Ludwig script etched into it.
Any help identifying these parts and their value is greatly appreciated!