I WOULD AGREE THAT IT IS NOT TOURIST WORK, THE FITTINGS APPEAR TO HAVE SOME AGE AND ARE WELL DONE AND THE HORN OR SEA TURTLE SHELL ALSO LEADS ME TO THAT CONCLUSION.
WE HAVE DISCUSSED TOMBAK'S BEFORE BUT I WILL ADD A LITTLE CONJECTURE

,THAT I DON'T THINK WAS COVERED. TOMBAKS WERE SPEAR BLADES AND WERE PROBABLY PASSED DOWN THRU THE FAMILY AS OTHER WEAPONS WERE. AT SOME POINT CARRYING A SPEAR AROUND BECAME SOCIALY UNACCEPTABLE OR PERHAPS YOU WERE LOOKED DOWN ON AS BEING PRIMATIVE AND FROM THE COUNTRY. AT THIS POINT SOME OF THE HEIRLOOM BLADES WERE REMOUNTED AS TOMBAK SO THEY COULD STILL BE CARRIED AND HONERED AS FAMILY HEIRLOOMS. SO IN MOST CASES THE BLADES WILL ALWAYS BE OLDER THAN THE FITTINGS. OTHER SPEARS WERE NEVER ALTERED AND KEPT AROUND THE HOUSE OR STORED SOMEWHERE.