三角 さんかく えん神獣 しんじゅう きょうだったら
sankakuenshinjū kyōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 三角縁神獣鏡

1. If it were a triangular-rimmed divine beast mirror.; If it had been a triangular-rimmed divine beast mirror.

Tara Conditional