I have recently aquired 2 Sauer 38H pistols. One is a pristine 98% Eagle C marked pistol. The other is a thinned blue commercial eagle N "shooter". They are only 454 numbers apart in their serial numbers. The police marked sauer grip has the marking Sports inc. Franzite Chicago. The "shooter"'s grips doesn't have this mark but appears that it was milled off or misstruck. All other marks on the grips are identical. Are these original or aftermarket grips?