Belay device, stitch plate, belay ring, pig nose, pig's nose

Deadstock item (or reproduction) purchased from Ebay (US).
This is one of a set of three, so I am listing one of them.
It is an unused item with the instruction manual, with only minor scuffs from storage.
At climbing gyms, I'm treated as a bit of an oddball (in a good way lol).
Older people often strike up conversations with me, and it's surprisingly easy to use.

Brand: ABC
Country of Manufacture: EEC
Color: Black
Accessories: Instruction Manual
Features: With spring
Weight: Approx. 83g
Plate Width: Approx. 62mm
Plate Thickness: Approx. 11mm
Overall Height: 44mm