Very old spoon in original box 1850s?

Don't know about these but they fit in the boxes correctly, saved in each original boxes, with sterling silver and coin silver spoons from 1850s. My wifes family had many girls born 1850-1910 and all silver was saved with the antiques posted here. The girls were from Salem Ma and a lot of their coin silverware is from silversmiths around Salem 1850-1890. These are not marked and possibly not sterling i don't know , Baby spoons maybe?
Just found an advertisement from them 1871-1890