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<p>[QUOTE=&quot;Severus Alexander, post: 2762728, member: 84744&quot;]Thanks for drawing my attention to this, [USER=19463]@dougsmit[/USER]!&nbsp; I think I have the answer: they&#039;re part of a series where the officina was doubly identified.&nbsp; In the exergue, first we have R for Rome.&nbsp; The last letter is the usual Greek letter for the officina (B=2nd for yours, Z=7th for mine).&nbsp; The middle letter comes from the sequence &quot;AEQVITI&quot;, and identifies the officina by position in the sequence... so &quot;E&quot; for yours and &quot;I&quot; for mine.</p><p><br /></p><p>Is that right?[/QUOTE]</p><p><br /></p>

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