画像は『Katlego_Moncho 2019年10月15日付Twitter「So, we are having a whole debate in the office about this. Guys, which is heads, and which is tails?」』『Katlego_Moncho 2019年10月16日付Twitter「The old SA coins used to have heads on one side, hence that was referred to as the head and the other side the tail.」』のスクリーンショット (TechinsightJapan編集部 FLYNN)