Originally Posted By: AlanK
There is a resemblance to #42. I thought of big events that would use something of that shape and size, but earlier than the one in #42. Thanks to Wikipedia, I could start in Athens and proceed. Thanks to wagga, he did not force many iterations.

You might be on the right track for where... but what?
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Verum audaces non gerunt indusia alba. - Ipsi dixit MCMLXXII