MoMA Poster Calendar January 1984

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MoMA Poster Calendar January 1984 is designed by Igarashi Takenobu 五十嵐威暢 in 1984. A year has 365 days, and it consists of 622 numerals.  Igarashi designed 622 different numerals for each month. He continued this for 7 years, which leaves 4356 numerals in total. The numerals are designed as axonometric three-dimensional forms based on 84 different ideas. He draw almost all numerals by hand with a ruling pen, grid paper, and compass without computers.