#1
I searched online and couldn't find any EMG-HZ's with the screws at the top. It's a passive, 5 wire quick connect. I can get some pics of the back too if that helps.

My main rig:
Schecter C-1 Classic
B.C. Rich Mockingbird NJ Neck-thru
LTD M-300
Peavey 5150 II
Randall RS412XL

Greatest thread ever.
#2
That's a first edition neck position HZ with the pole pieces missing. It looks like just the cover.
MARSHALL JVM 210H
PEAVEY JSX
KRANK 412
MESA 412
FENDER STRATS
DIMARZIO
CELESTION