はぼうきかいじゃなかったです
羽箒貝じゃなかったです
habōkikaijanakattadesu

Noun
Desu Copula

The polite, past negative form of はぼうきがい

1. It wasn't a feather duster.; It wasn't a shell.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana