Vics
Veteran
My "Identifyting Leica Cameras" Says red dial IIf is '52 to '56. KEH hyas one for about $350, I think. Canadian. Ha flash Synch and 1/1000. You're right about the rarity. The IIc looks good, too. Less to go wrong...,For what it is worth IIfs can be about as cheap as a screw Leica can be, and I suppose they are comparatively recent. The red dial IIf is far more common than black dial but whether it has an effect on value I know not.
Michael