Your example is dated 1905 or earlier, and does not have arcs in the dial, nor does it have 6 bars in the killer. The killer bars are greater than 18 mm in height, and there are more or fewer than 8 bars.
Question: Is the height of the killer bars greater than 20 mm?
Yes [the killer bars are greater than 20mm in height]
No, [the killer bars are less than 20mm in height]
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