I use the edition of C&C that covers the entire
medieval and modern period of
Spanish coinage in one volume: Las Monedas Espanolas desde los Reyes Visigodos ano 406 a Juan Carlos I. As far as other references, all that I can suggest is that you
search online for similar coins and see what they provide as references.
In doing that myself just a moment ago, I noticed that very similar coins exist from the next two
Spanish kings, Philip IV and Charles II, and I really can't be sure which of those rulers struck your coin. Sorry.