I just happened to stumble over this one.

19th & 20th Century Literature: Hemingway, Morrison & Tolkien—Fall 2019

Seems to be in Toronto on Oct 10, includes:

J.R.R. Tolkien, The Lord of the Rings, three first editions with folding maps in rear of each volume, London, 1954-55. $5,000 to $7,500.