Thank you for this helpful clarification. I understand the feeling when a colleague delineates your ideas as his/her own, as this very thing happened to me in a conference-presentation I attended in November. A dear colleague of mine was discussing ideas for which someone else in the room credited him, but which derived from an article I published 5 years ago (a copy of which I subsequently gave to him to read).
The only question you left unaddressed is whether you believe this to be the seal of the owner, which was used to make fiscal bullae for the masses, or to be one of the undoubtedly numerous seal impressions (bullae) that were produced by means of the original seal.
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