I have a DOVO 5/8 and 6/8 straight and was considering buying a DOVO 5/8 Half Hollow since it is presumably better for harsher whiskers. Before I committed to buy I thought... WAIT a minute. Maybe I already have a half-hollow DOVO razor. I have the boxes (plastic), and is there any way to tell from the markings on the box if it is FULL or HALF hollow grind?