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The stethoscope very occasionally appears in part of a medical stamp design and usually on stamps depicting some aspect of hypertension or blood pressure measurement. However, the 10 yen stamp from Japan in 1958 has the stethoscope as the central feature and was issued to commemorate the International Congresses of Chest Diseases and Bronchoesophagology held in Tokyo. The stamp from Senegal is relatively rare being imperforate and was issued in April 1972 for the World Health Day. The stamp shows the World Health Organisation emblem, the ECG, and auscultation of the chest.