According to an article by Terry Nelson, Antique Watch Repairman, silveroid is an alloy 45% nickel, 54% copper and 1% manganese. So, in a word, "No."
It could be either...depends on the fork.
Yes
No. Why? it,s just silver painted metal
Nickel Silver
yes
Tarnishing of a silver fork in air is a chemical change because it involves a reaction between the silver and sulfur-containing compounds in the air to form silver sulfide. This reaction alters the chemical composition of the silver on the surface of the fork, resulting in the formation of a dull, tarnished layer.
The Oneida is a company that creates Silver Holloware & Flatware. I actually have a fork from the onedia community, so I know they specialize in Silver Plates Flatware and Holloware. So I would think par plate would mean Silver Plate.
Nevada d & a silver fork with initials IHW
The medical term for "silver fork deformity" is "colles fracture." It refers to a specific type of wrist fracture where the bone breaks near the wrist joint, resulting in a characteristic appearance resembling the shape of a silver fork.
The IS on Wm Rogers Silverware stands for International Silver.
Cathode, as the fork attracts silver cations (+ ions)
It is nickel silver... no actual silver content.