Mmmm, what a great letter M design. Even better is that it is one of 18 letter images from the same set of vintage drop cap images. All of them are from a book published in 1887, so they are at least that old. All of them have the same background now and measure 1.5 inches wide. Their heights vary slightly but they are around 2.8 inches tall. They all feature a dramatic black and white letter, like this letter M design. The letter is then outlined in white and black as well. They all feature flowers, leaves and vines draped around and on the letter. Quite a nice set.
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.