I have bought, sold, and kept several nice old thermometers, but this is the nicest one of this type I have seen. It's in pristine condition. It is silver (sterling), fully hallmarked (thought it took me quite a while to find them), with a porcelain dial. The hallmarks declare the piece to be British Sterling Silver, minted in London , in the year 1898, by the makers WCJL. The thermometer is in working order, showing both Fahrenheit and Centigrade. The Velvet back (again pristine--I can't think it was ever used) is stamped with the name of a Regent Street Goldsmith and Silversmith. The piece has been engraved. I think it is a "W" and it even looks like there is an inverted horseshoe and something else intertwined with the "W." The piece measures 6 and 3/4 inches tall, and 3 and 3/4 inches wide at the widest point. This is a beautiful piece and in the best condition I have ever seen a thermometer be. I will probably regret listing this one for sale!