Adam,
Even if you don't understand Spanish (much), then perhaps this list on a Spanish Civil War forum can be of help. It gives some details about the Condor Legion He-59 losses. Scroll down a bit on
http://guerracivil.forumup.es/post-8...erracivil.html
It boils down that 10 He-59s were lost: 5 AA fire, 3 accidents and 2 shot down by fighters of Republican forces.
Regards,
Leendert