  A high-resolution spectrum of the helium-rich `hot subdwarf' GALEX
J184559.8-413827 (J1845-4138) obtained with SALT HRS demonstrates it to be the
first extreme helium (EHe) star to be discovered in nearly 40 years. A
quantitative analysis demonstrates it to have an atmosphere described by Teff =
26 170 +/- 750 K, log g /(cm s^-2) = 4.22 +/- 0.10, and a surface chemistry
characterised by CNO-processed helium, a 1% contamination of hydrogen (by
number), and a metallicity 0.4 dex subsolar. Its distance and position are
consistent with membership of the Galactic bulge. Its sharp absorption lines
place strong constraints on both the rotation and microturbulent velocities.
Spectroscopically, J1845-4138 closely resembles the pulsating EHe star V652
Her, generally considered to be the product of a double helium white dwarf
merger evolving to become a helium-rich sdO star.
