I have my grandfathers 99 take down. SN/331xxx My dad had the rear sight changed after he missed a deer in the '70s I may have original rear sight someplace in the house. He asked the gunsmith to drill for a scope, thank God he told him "don't do it" I tried to attach a pic , but it's telling me file is too big. I croped it down still too big. I'll try taking a lower res pic. My grampa used to shoot the heads off partridges with it. He, my dad and I have all shot deer with it.