だい勲位くんい菊花きくかしょう頸飾けいしょくだったら
daikun ikikuka shōkeishokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 大勲位菊花章頸飾

1. If/When it were the Supreme Order of the Chrysanthemum, neck decoration.

Tara Conditional