The “Original” stamping on mine looks factory (compared to some of my others), while the “CLASSIC” doesn’t. However, the “Original” stamp is offset as if to make space for the “CLASSIC”.
My rear sight holes don’t look like they’ve ever had anything in them, or on top of them, either.
I hadn’t had it out of the cabinet for ages. Forgotten how long and heavy it was. Not helped by the period Simmons 4-16x40 on top. But, on a few dry presentations, if you get the technique right, it does hang and hold on target well.