Which preposition to use with opima

at Occurrences 1%

And they gave him the right to offer the so-called spolia opima at the temple of Jupiter Feretrius, as if he had slain some hostile general with his own hand, and to have lictors that always carried laurel, and after the Feriae Latinae to ride from Albanum to the city mounted on a charger.

of Occurrences 1%

The latter takes what part of the public favour falls to his share, without grumbling (to be sure he has no reason to complain) the former is always quarrelling with the world about his modicum of applause, the spolia opima of vanity, and ungraciously throwing the offerings of incense heaped on his shrine back in the faces of his admirers.

to Occurrences 1%

The armor stripped from the prince he would have dedicated as spolia opima to Jupiter Feretrius, had he been a general acting on his own authority.

Which preposition to use with  opima