Dainty filligree fancy letter S. Great drop cap image.
This letter image was included in the book Original Christmas Stories: The bell fo the fruits, Little Betty, The naughty little squirrel and How they helped Santa Claus an advertising piece from “Baldwin the Clothier.” It was most likely given out as a Christmas premium in 1873.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.