秘宝ひほう
hihō

Noun

1. hidden treasure; treasured article

いえ、これは秘宝ひほうですから。わたくしたちもこの、初はじめてたのです。
ie korewa hihōdesukara. watakushitachimo kono ta bihajimete mita node. su
No, it's a national treasure, you see. This is the first time we've seen it as well.