Under $100.
Numrich Gun Parts Corporation have most, if not all of the parts for an Excel shotgun. They are located in West Hurley, NY.
Take it to a gunsmith
1893-1932
Is this shotgun manufactured with a twist steel barrel
Depends if its damascus steel or not.
No published sn data
Yes.
Have it examined by a gunsmith
Excel was a trade name used by HD Folsom Arms and Iver Johnson Arms and Cycle Works on shotguns made for Montgomery Wards.
A pie chart.
Rows are identified by numbers in Excel.
The value of a sears nitro excel 16 gauge single-shot shotgun can vary widely depending on its condition, rarity and any unique features it may have. Firearms values change overtime and may not have significant collectors value.