Two variants of a similar magatama-shaped seal in God Age script are seen e.g. here https://t.co/cav8pS0iqN (1874 諡号考) and here https://t.co/b7FgNpCb0A (1875 明教歌選). Seems to read Hirochika ひろちか from right to left. Was there a [Yoshioka] Hirochika? Probably. 4/ https://t.co/OkSYmePI7a