Don't understand the marks on this spoon

[Oninoakuma]

Marked as J.H. & A. Benedict

The other marks are however odd. An American eagle, followed by a D and George III duty mark.

Any opinions would be helpful.

[Francais]

They don't mean anything. They are pseudo hallmarks meant to give the impression that they are hallmarks. If they mean anything it is the eagle is American, the D stands for Dollar or Coin, etc. They are quite common on late coin silver usually around the NY area.
Maurice