とりかぶとじゃなかったです
鳥兜じゃなかったです
torikabutojanakattadesu

Noun
Desu Copula

The polite, past negative form of とりかぶと

1. Wasn't a birdcage.; Wasn't a helmet.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana