Boy, do I feel like an idiot.

THere are two tiny stubbs on the numbered counter ring around the film advance knob. Those are for rotating the counter ring to point to the desired number.

yeesh. :)

Jeremy -- thanks for the pointer. Cool reading, but mine is a bottom-loader.

I'm looking forward to the day when I have good reason to research which of the synch delay settings to use for which flashbulbs. :)