Cite

[Decorative bracket with sign suspended showing a key and anchor, within simple rectangular border] [graphic].

MLA

[Decorative Bracket with Sign Suspended Showing a Key and Anchor, within Simple Rectangular Border] [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/16830846.

APA, 6th edition

[Decorative bracket with sign suspended showing a key and anchor, within simple rectangular border] [graphic]. (0 C.E.). [Advertisements, Trade cards (advertising), Ephemera, Engravings England 1757]. publisher not identified. https://collections.library.yale.edu/catalog/16830846.