A Pair of Bright Orange Plastic Piggy Banks Advertising O's Gold Seed. The Pair of O's Gold Seed Piggy Banks were produced for O's Gold Seed in Iowa in the 1960s. The 2 Little Piggy Banks are bright Orange and measure 3 3/8 inches nose to tail, 3 inches tall and 1 1/8 inches wide. The Coins go in the top but there is no where for them to come out unless you break the bank or shake them out. They are both marked: "Buy O's Gold Seed Save your Money".