I'd consider that to be the back. To me, the "front" of a monitor chassis would be the side closest the picture tube, and the "back" would be closest to the back door of the game.
Just like a television chassis - the "front" is where the user controls would be mounted, and the "back" would be where the power cord and antenna terminals enter.
But, yeah, if you're working on the chassis, then usually the "back" would be closest to you, and could therefore be called the "front".
Whatever. It's pot with "50/60" printed next to it on the circuit board.
-Ian