Good buy !! Welcome to the group !! Looks like a nice little pot from a coffee service !! Go ahead and clean it !! As long as you use a silver polish you will not hurt it !! May be only silver plate,, can`t tell by just looking. When you have cleaned and polished it with a soft cloth, you may find the hallmark or name !! Silver was meant to be polished regularly and used,, not left tarnished !!