Brian, there is a lot of variation in original Parker checkered cheeks, and not all are as extreme, with repsect to the beveled edge, as the C which Bruce has shown.
This is an untouched BHE, in the 189K sn range, and as you can see there is only a minor bevel to the leading, vertical edge. The panels are sunk below the outer edge, but not as significantly as that which Bruce has shown.
I am not remotely convinced that Forrest's CH is not original, and I don't think there is enough photographic evidence to suggest conclusively otherwise.
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