  We show a uniqueness result for the n-dimensional spatial
Reissner-Nordstr\"om manifold: a static, electrovacuum, asymptotically flat
system which is asymptotically Reissner-Nordstr\"om is a subextremal
Reissner-Nordstr\"om manifold with positive mass, provided that its inner
boundary is a (possibly disconnected) photon sphere that fulfils a suitably
defined quasilocal subextremality condition. Our result implies a number of
earlier uniqueness results for the Schwarzschild and the Reissner-Nordstr\"om
manifolds in the static, (electro-)vacuum, asymptotically flat context, both
for photon sphere and black hole inner boundaries, in the tradition of
Bunting-Masood-ul Alaam [1] and Ruback [16]. The proof relies on the ideas from
those works, combined with newer techniques developed by Cederbaum-Galloway [6]
and Cederbaum [2].
