Which preposition to use with cuirass

of Occurrences 10%

One of them, I mind, wore a rusty cuirass of chain armour, which must have been one of those sent out by the King in the first days of the dominion.

on Occurrences 3%

Have you a cuirass on, Concini? Concini.

under Occurrences 2%

We wear daggers, shirts of mail, and very often the whole cuirass under the cape.

by Occurrences 1%

The Good Knight, who in such danger never slept without his steel gauntlets and thigh-pieces, with his cuirass by his side, was soon armed, and mounted his horse, which was already saddled.

for Occurrences 1%

Once again he read it from end to end ere he crumpled the note in under his cuirass for future consideration.

Which preposition to use with  cuirass