Dear Professor Tolkien died in 1973. 💔

1973.

Reverse that and you get 3791.

3791.

3 for the Elvenkings under the sky
7 for the dwarf lords in their halls of stone.
9 for the mortal Men doomed to die
1 for the dark lord on his dark throne.
In the land of Mordor where the shadows lie.

3791

1973

Coincidence?