だい しゅ郵便 ゆうびん ものじゃありませんでした
daini shu yūbimmonojārimasendeshita

Noun
Desu Copula

The polite, past negative form of 第二種郵便物

1. It was not second-class mail.; It wasn't second-class mail.

Past/Perfective
Negative
Polite
Terminal Form