Sorry I'm late folks -
Hi Ariel and all:
The koftgari I agree is a later addition as Rand said. I took a look at the pictures and the quality is more in keeping with that commonly coming out of India now. I think it may be that it is a restoration based on the remnents of what was originally there (I would hope anyway
) and if so I would call it a restoration. As restorers they may have had to re-cross hatch the area to have sharper grooves to "catch" the koftgari. This would of course not be true inlay but koftgari on the surface.