Hard to tell from that picture, but it looks simular to the Unimesh dishes. The size of the holes in the mesh will determine how well the ku works, if a pencil point won't go through the hole, it should work fine. If the pencil point goes through the hole, it may or may not work, but if it does work, it won't work as good. Personally, I think it will be fine.
Look across the dish. It should look flat from rim to rim. If it's warped you may have reception problems. If it's flat you should be ok as long as the mount is in good shape.
Look across the dish. It should look flat from rim to rim. If it's warped you may have reception problems. If it's flat you should be ok as long as the mount is in good shape.