Silver? Yes but only in colour

So i bought some lovely silver picture frames and these tongs were thrown in for free to boot. At first glance you might think these tongs are silver,anchor for B’ham and an S for perhaps 1917 ? Maybe a bit slack on not including the lion hallmark? …No,not solid silver but plated. “L & W” meaning Lee & Wigfull and the S for Sheffield. Sailing a bit close to the wind in my opinion legally speaking and interesting to see how close to proper silver marks people would go with silver plate…“All that glitters”,as they say