Looks like K or N service stocks form 1920-1929. My guess as to value, and I am no expert, but they seem to be in good condition, in the $75- $100 range. More pictures needed for a better evaluation by someone with more expertise that myself.
Looks like K-frame square butt grips from the 1920s. If you can make out the penciled SN on the rear of the right panel (often hard to do), they can be more accurately dated. For those specific grips, I'd say they would sell toward the lower end of the previous estimate provided.