When The Parker Story was published, not all frame size/gauge combinations were known. Even our own forum doesn't include all combinations in the chart, last time I looked. Among the frame/gauge combinations missing from our own forum chart are 000 frame 28, 1/2 frame 20 and 16, 1 frame 10, 2 frame 20, 3 frame 12 and 16, 6 frame 12, and 1 1/2 frame 20. These are combinations I have actually seen and examined. There may be others.
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