IT LOOKS LIKE A NICE EXAMPLE OF THE FORM.
ITS NOT MY FIELD SO ABOUT ALL I CAN SAY IS INDO-PERSIAN AX DOES SHOW SOME PATINA TO THE SHAFT AND THE BLADE INLAY ABOUT NORMAL FOR THESE. YOU DON'T SEE AS MANY WITH THIS SHAPE OF BACK SPIKE AS THE DOUBLE BALDED OR HAMMER BACK FORMS SEEM TO BE MORE PREVALENT . PERHAPS A FORUM MEMBER WITH MORE KNOWLEDGE CAN PIN IT DOWN AS TO WHERE AND WHEN IT WAS MADE. GOOD LUCK