Pete,
Thanks for posting the pics. I recall the gunboards discussion, it was pretty inconclusive. My point to Alfred was to stress that that there are many exceptions to the expected observation of halo--the GERMANY stamp is one of the more striking--and that absence of expected halo, or presence of halo where it is not expected, while requiring a closer look, sometimes is authentically noted.
An interesting observation, which I have seen before and think meaningful, is the halo exhibited by the witness mark on sn 47927.
--Dwight
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