Stephen Soule was in Company E of the 10th VT Infantry for 5 months, then resigned. He later was in the NJ 35th Infantry, Company C for 9 months. His widow, from Mooresville, NY, applied for a pension.
The value depends on many things; what type of gun, what condition, the wording of the inscription, etc. The soldier's record also is important;on the surface, his service seems unremarkable. Most ID'D items seem to sell for three or four times the value of an un-id'd identical item.
If you would email me images of the items I'll try to give you a ballpark value, as well as how you might sell them. I have a few weapons, but am not in the category of those who can afford id'd arms.