In the past, most stamps were designed in-house. But today efforts are being made to raise design standards, and most stamps are "contracted out" to artists depending upon the specific subject and the artist's own strengths.
過去以「內制」為主，而今為提昇設計水準，多半「外包」﹘﹘就個別題材，找適合、擅長的藝術家設計繪圖。