1) US Model 1816 Socket Bayonet. 16" fluted blade, 3" friction fit T-mortise socket, 19" overall. Small inspection marks of G, J and N on ricasso. Moderately oxidized with some pitting.
2) Relic Maryland Socket Bayonet of indeterminate pattern, circa 1800-1805. 14.5" blade with rudimentary face flute, 3.125" unbridged friction fit socket, 18" overall. Remnants of US mark on face of blade, as well as a deeply struck small "M" that is also hard to read. Flat shank face. Socket heavily damaged and cracked. Metal heavily oxidized and pitted.
3) Relic condition copy of a "Shield Shank" Brown Bess socket bayonet. 13" unfluted blade, 3.5" friction fit socket with reinforced rim, 17" in overall length. Relic condition and heavily pitted, nearly in dug condition. Blade likely an 1" or so short of full length.
4) Crude early US socket bayonet, probably circa 1760-1780. 14" unfluted blade, 2.7" unbridged friction fit socket, 16.625" overall. Prominent weld joint where the neck meets the socket. Unmarked. Heavily oxidized with forging flaws, pitting and wear and brazed cracked seam in the socket.