The first one is a 597 the second one is a 632 and the third one I'd say is a flat plate 552 because the design looks a lot smaller than the rotary next to it
Although scans can be confusing and misleading, it appears that the left stamp is WIDER, the middle stamp is TALLER, and the right stamp is 'just right' to use Goldilocks terminology. On the one-cent issue: Wider stamps have to be SC597 coils or SC594 if perf-11 on all sides. Taller stamps are SC632 or SC596 if perf-11 on all sides, or SC604 if coils. Just right stamps are SC552.
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