鼈甲 べっこう細工 さいくじゃありませんでした
bekkōsa ikuja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 鼈甲細工

1. It was not tortoiseshell inlay.; It wasn't tortoiseshell work.

Past/Perfective
Negative
Polite
Terminal Form