A Funnyback is a type of one-dollar silver certificate produced in 1928 and 1934 in the United States. People referred to the note as a "Funnyback" based on the significantly lighter green ink and unusual font printed on the reverse.
The note marked the introduction of small-size banknotes in the United States. Prior to 1928 the United States currency was of the large-note variety; measuring 7.375 by 3.125 in (187.3 by 79.4 mm) people referred to them as "Horse Blankets". The small-size Funnyback dollar measured 6.14 by 2.61 in (156 by 66 mm).