On a teacup or something, they often write 'spring, summer, 2 masu 5 go, and winter' (no autumn), and these words read as 'akinai masu masu hanjo' (means 'business prospers more and more'), and the thing with these words is regarded as a good luck charm.
しばしば、湯飲みなどに「春夏二升五合冬」と書いて、「商い（秋無い）益々繁盛」の縁起物とされる。