Honestly, I have looked the bolt over carefully with a loupe. There are no stampings anywhere. There is what appears to be a small punch mark on the bottom of the bolt handle, but that's all.
The "whittling" would be on a hand guard, only, and just as an exercise.
If I may, what is your estimation of a range of value? I have been advised by another collector that the value is probably around $1K, tops.