Acid test is totaly strange result. With 22ct gold acid copper bubbles green and steel bubbles white turning it black.
but this thing bubbles yellow with 22ct gold acid. Negative result with silver acid.
I wish to know why this steel item picks up as gold or foil on my detector. Its not non ferous but its ferous metal. But detector gives it low non ferous metal. I have digged many steel and iron items. Cast iron, Iron ext but this thing is strange.