Hi, I am responding to ross waters' post on "Creaciones DOCA". I also have a Creaciones Doca guitar (classical).
I believe my father-in-law bought the guitar in Spain in the 60s or 70s. I had the frets dressed at a shop here in Toronto a couple of years ago as the neck had shrunk a bit, and the luthier's comment was that it was probably a mid-price guitar, and fairly representative of what Spanish makers produced at the time - solid spruce top, reasonably well-made, but nothing fancy about the materials, finish or workmanship. I don't play it that often as the bridge has bowed the top up a bit, making the action somewhat high; combined with a thick neck that makes the guitar a bit of a beast. However, it's been in the family for roughly 50 years so I play it every now and then!
If you have any more information on the maker or the Doca product line, I would be very interested in learning more!