  A sunspot catalogue was published by the Coimbra Astronomical Observatory
(Portugal), now named Geophysical and Astronomical Observatory of the
University of Coimbra, for the period 1929-1941. We digitalized data included
in that catalogue and provide a machine-readable version. We show the
reconstructions for the (total and hemispheric) sunspot number index and
sunspot area according to this catalogue, comparing it with the sunspot number
index (version 2) and Balmaceda sunspot area series (Balmaceda et al., J.
Geophys. Res. 114, A07104, 2009). Moreover, we also compared the Coimbra
catalogue with records made at the Royal Greenwich Observatory. The results
demonstrate that the historical catalogue compiled by the Coimbra Astronomical
Observatory contain reliable sunspot data and therefore can be considered for
studies about solar activity.
