Here’s an unusual “plug” bayonet find. The design appears to be most likely Spanish in origin, or possibly Italian.
Believed to have borrowed the name of the French city of Bayonne, the bayonet rose to prominence as a vital military weapon during the last half of the 17th c. Arriving in Virginia in the 1670s, the first of the type are referred to as “plug” bayonets, being little more than daggers with tapered handles which were “plugged” into the muzzles of the muskets. Earlier iron-mounted examples were quickly replaced by cast-brass hilted bayonets by the late 1680s, and all were obsolete shortly thereafter.
Once British cutlers began to produce bayonets with brass hilts, a myriad of decorative versions appeared, including those with tiny human and animal’s heads and mythical figures. Before 1690, a plain class of plug bayonets had been developed for common soldiers that included a recurved crossguard with swollen quillons, ending in a rounded point. The guard on this example is almost identical to the relic excavated at the Wetherburn Site, and serves to illustrate what the complete weapon would have looked like when it arrived in Virginia, perhaps in the late 17th c.Colonial Williamsburg E-Museum, Military Plug Bayonet, https://emuseum.history.org/objects/102946/military-plug-bayonet;jsessionid=591A154B7E5DB48356A5EA2B6867ACD1
Here are some similar examples I’ve found: