Washington DC The Capitol Souvenir Key Thermometer Vintage

This is an older souvenir for Washington DC. It is shaped like a key with a tassel and has a working thermometer on the stem. It seems to be a brass colored coating over the metal. There is some wear on the backside of the stem where it looks like someone had tape on it an it has discolored a small section and there is pitting and loss of the brass color to the area as well. The thermometer seems to be working. It will need to be deep cleaned and polished.It measures about 7" long. Please message if you have questions and thanks for looking!