Columbia OD knob, which side up?

[SoCalCoupe]

Which picture is the right side up? I think it's the first one but I see how it could be the second. This is probably going the make difference between a 398 and 399 score at my next concours (NOT!)

 

[47topless]

You are probably correct. The top one reads "OD". (Overdrive)

 

[Kube]

You are probably correct. The top one reads "OD". (Overdrive)

Concurred.