Interesting post card issued sometime around early 1930.
From the top down
1920 Japan National Census Taker’s Badge https://asiamedals.info/threads/1920-japan-national-census-takers-badge.24447/
Korean Census badge
1925 Taiwan Census badge https://asiamedals.info/threads/government-general-of-taiwan-census-takers-badges.24400/
1930 Japan National Census badge https://asiamedals.info/threads/1930-japan-national-census-takers-badge.28164/
From the top down
1920 Japan National Census Taker’s Badge https://asiamedals.info/threads/1920-japan-national-census-takers-badge.24447/
Korean Census badge
1925 Taiwan Census badge https://asiamedals.info/threads/government-general-of-taiwan-census-takers-badges.24400/
1930 Japan National Census badge https://asiamedals.info/threads/1930-japan-national-census-takers-badge.28164/