by Cyanocorax - uploaded on November 27, 2020, 7:12 pm
This is a large vignette or typographic ornament, but it's unclear what it was meant for.
From the catalog Specimens of type faces, stock cuts, initials, logotypes, etc. (John Polhemus Printing Co., New York,1895). Found here: https://archive.org/details/specimensoftypef00john/page/131/mode/1up