What does EPVS A1 mean on a Kenson silver plate teapot?

What does EPVS a1 mean on silver plate?

EPVS A1 on silver plate typically indicates that the item is made of electroplated silver, with "EP" standing for electroplate, "VS" for a type of silver plating, and "A1" indicating the quality or thickness of the silver layer. This designation suggests that the piece is not solid silver but has a thin layer of silver applied over a base metal. The quality of the plating can vary, so items marked with A1 are generally considered to have a higher quality than those with lower designations.