This Knight Is 'Grimm'

In this fortnightly series on Top eBay Chess Items by Price, I see a fair number of chess sets, artwork, and philatelic items, like the Fischer - Spassky 1992 covers on the previous post. Once in a while I discover an item that defies classification. See, for example, Anton Chotka (18??-19??) and Red and Yellow Speed Wheels Included.

When you look at the image below, you probably have no idea that the auction was for 'The Black Night Chess Piece from Grimm Episode 319'. It sold for US $740.15, after receiving 39 bids from 16 bidders.

The description explained,

This "Grimm" memorabilia appears when Theresa "Trubel" Rubel appears in Season 3 of the show. Trubel is a Grimm that grew up with a troubled past and never benefited from a guide to explain the implications of the Grimm status to her. She carries around a black knight chess piece because she likes the way it moves differently than any other piece. You can own this chess piece for yourself, which will be displayed in a shadowbox, along with a certificate of authenticity.

The producers of NBC's hit TV series Grimm have donated an incredible collection of authentic, screen-used props to be auctioned off for the Grimmster Endowment benefiting OHSU Doernbecher Children's Hospital. Each production item was used on set.

Living outside of the USA, I had never heard of 'NBC's hit TV series Grimm' and the first paragraph in the description might as well have been written in Greek. Then I consulted Grimm (TV series) [Wikipedia]; 'Grimm is an American police procedural fantasy television drama series'. Now I know.