The grips have been refinished. If you look carefully at the bottom border you can see the over run from the checkering tool. The original checkering would have been very high, uncut, on the top and lower borders. Notice the top of the checkering on the right hand panel near the border. See how it's rounded up and un cut? That's the way the bottom should look. Some stocks are finished better on the bottom but most aren't. I'd also hazard a guess as to the gun being refinished also.
DW

__________________
"NUTS"