*Note: The year of the competition I participated in was Showa 61 (1986), so it's a mystery why the box is labeled Showa 57 (1982), as there were no model changes. I belonged to the chorus club as a temporary member at the time, and this is the participation badge I received when we competed in the prefectural competition, where we didn't win any prizes. I was a temporary member recruited only for the city competition, but since we won the gold prize, we ended up going to the prefectural competition, and I received this badge then. I found it by chance while cleaning, and since it will likely get lost again if I keep it, I'm offering it to someone who collects these or who lost theirs back then. *The box has discoloration and stains due to age. **As a bonus, I'll also include a Showa-era retro school committee badge.