Just dug this 14" down on an island
not sure how old it is, i looked up nachos and ones with the flexible arm are Called fishermen or admiral Anchors
have no idea how old it might be,
I have washed it down bit cant find no markings at all
If that was a salt water island, you need to keep it submerged in fresh water several months, changing the water frequently, otherwise it will crumble to dust. I'm sure someone will chime in for an ID.