The Collaborative International Dictionary of English v.0.48:

Unsceptered \Un*scep"tered\, Unsceptred \Un*scep"tred\, a.
   1. [Pref. un- not + sceptered.] Having no scepter.
      [1913 Webster]

   2. [1st pref. un- + scepter.] Deprived of a scepter.
      [1913 Webster]