Regalia
In the abstract

The term can refer to the rights, prerogatives, and privileges that are held exclusively by any sovereign, regardless of title (emperor, grand duke, etc.). An example of that is the right to mint coins, and especially coins that bear one's own effigy. In many cases, especially in feudal societies and generally weak states, such rights have in time been eroded by grants to, or usurpations by, lesser vassals.
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