A vintage Guinness Extra Stout advertising mirror featuring screen-printed graphics on a glass substrate. The design comprises the brand name Guinness in arched gold-tone serif lettering with black outlines, positioned above a central gold-tone Irish harp emblem. The harp is flanked by grey decorative foliate scrolls. Below the central motif is a red facsimile signature of Arthur Guinness. The lower section of the mirror features the text Extra Stout in gold-tone serif letters with black shadowing. The entire graphic composition is enclosed within a grey rectangular border. The mirror is mounted in a dark-stained wooden frame.