  The black hole candidate Swift J1753.5-0127 went into outburst in 2005 June.
Rather than fade into quiescence as most black-hole-candidate transients do, it
has remained in a low hard spectral state for most of the $\sim$ 9 years after
outburst. The persistent emission while in a hard state is reminiscent of the
black hole Cyg X-1 and the black hole candidates 1E 1740.7-2942 and GRS
1758-258. Thus far hard X-ray/soft gamma-ray results have focused mainly on the
2005 flare, with a few additional observations during 2007. Here, we present
results from INTEGRAL/SPI observations from 2005 - 2010 spanning the 22 - 650
keV energy range. Spectral analysis shows a weak high-energy excess ( $\sim$
2.9 $\sigma$) above a cutoff powerlaw model that is well fit by a powerlaw
suggesting an additional spectral component. Observations of Cyg X-1, 1E
1740.7-2942, and GRS 1758-258 have shown similar spectra requiring an
additional high-energy component The SPI results are compared to previously
reported results for Swift J1753.5-0127 as well as observations of other
sources.
