A tie clip commemorating the opening of the Sanyo Shinkansen on March 15, 1972. This belonged to my father, who was a JNR (Japanese National Railways) station employee at the time. The acquisition route is unknown, but it has been stored at home for a long time in an old folk house in the warm Setouchi area. #SanyoShinkansen #OkayamaOpening #JapaneseNationalRailways