A single 78 rpm recording was found recorded by one Joshua Bueno de Mesquita. We are not sure but he may be the sone of Hazan David Bueno de Mesquita.
One side, shown in the photo, contains the blessings sung before and after the haftara. The other side had an extract from the Haftara read on Parashat Bo. For some reason the recording starts about six verses into the reading - perhaps the 78 rpm format did not allow for the full recording - so I have added a recording of my own of the opening verses.
Opening and closing blessings for the Haftara [Joshua Bueno de Mesquita]
Haftara example: Haftara for Parashat Bo
First six verses of Haftara Bo [JC]
Remainder of Haftara Bo [Joshua Bueno de Mesquita]