Proofed with modern powder
nitro hunter shotgun single barrel with exposed hammer stamped belknap hdwre and mfg serial 5516
50-100
You will have to state who made it.
Your LeFever 16 in good shape is worth about $300. In excellent shape about $450. It is hard to grade a shotgun without seeing it. Most of the ones I have were good to poor. Your Lefever Nitro Special was actually mfg'd by Ithaca Arms Co about late 1921 or 1922. Ithaca Arms purchased the assets of Lefever Arms in 1916 and started Mfg Nitro Special in 1921. A friend of mine recently purch'd a 12 GA in fair to good condtion for $150.
50-150 USD
I have one, double nitro breech, and a hexogan barrel half way down. Never seen one like this.
50 or so
50-100 USD
20-120 usd
There were many thousands of the Shapleigh King Nitro 16 Gauge with a double barrel. For the most part, they are worth about $50 to $100 depending on mechanical and finish condition.
Single barrel, tops out at $75. Double-barrel, tops out at $175. sales@countrygunsmith.net
what is it worth