Odd, mine, both the red M1/5 and the other, go to 11. Sounds like a Spinal Tap reference..More on the offer..
Nikkor-O 55/1.2. This sample with red M 1/5 is 800Euros. I have two more (identical except that engraving) that are 425Euros each. They can be mounted (with infinity focus) for Leica M mount. Wide open they are "dreamy" by f/4 they sharpen. Aperture only does down to f/8 though.