Does this look real?

[Rick B]

It is real and there was talk that this was a missed step for the checkering but there are way to many to be that. This were made this way as just before they rounded the edges a bit. A good example of time frame changes. Rick B

[Bodyman]

Checkered knobs have appeared on the very end of production Win-13's (as have sight seals - go figure). Though hardly considered 'correct' much after the mid to late 1.2 era, it is possible for any of these earlier parts to appear on later rifles (well, maybe not keystones and flat buttplates).