Vertical wall mount?

[smittyny]

Are there any technical reasons not to mount a Moreplay preamp vertically on a wall? It is a piece of art, after all. 
Assuming I secure the faceplate so it doesn't fall off, will the 6v6 work horizontally? Enough airflow?

I took a quick look at the 6v6 rca manual but didn't see anything on orientation.

[Paul Birkeland]

You have to be kind of careful doing this with tubes that have suspended filaments like 2A3s, 300Bs, 45s, 845s, 211s, etc, but a 6V6 isn't going to care about that.  Be sure to maintain a gap between the wood base and the wall so that air can move around and circulate inside the chassis, which is critical.