It´s a navaja made in Santa Cruz de Mudela, Spain. That pattern is traditional of that area, and it´s called 'navaja árabe'. It seems to be made by J.J. Martínez. As I don´t know exactly if it´s allowed to link to a commercial web i won´t, but you can google the name or the pattern and you will find it easily. Anyway, you can contact me directly if you need more help.
Hope it´s been useful.
PS,. Possibly the letters you cannot read are INOX, meaning 'inoxidable' (stainless)