The "thing" on the Emptor is to open and add "Sweet Aire" to the pad in the back of the Emptor. It was a fragrance/musk scent that would then be spread through the room(s) through the exhausted air. A lot like Kirby's "Odorific" in later years. Greg
The emptor tray, trim, handle grip, and belt lifter look original. The bag, cord, and wheels are not. As far as it's worth, to me what's important is what is it worth to you as a collector.
The red plug is a sweet Aire cap. If you look in the emptor is a metal trap/sleeve that hd a felt or similar type of material. Sweet Aire is where you would put scented drops into the Tor.
Your fan, entire nozzle, motor housing, emptor, handle and grip are original. The cord, bag,wheels aren't original.
It cleans up nice.
You got the Kirby! I am the seller you bought from. That 512’s original parts are the following:
Nozzle Bumper
Headlight Trim
Belt Lifter
Emtor Tray
Handle Grip
Brushroll
Fan
Etc.
Non Original Parts:
Wheels
Cord
Cloth Bag
I’m glad you like it! I’m sure it’s in a good home.