Which preposition to use with tontine

as Occurrences 1%

Strange as it may seem this play got Le Sage in a great deal of trouble because the government was employing the Tontine as a means of raising revenue and this play was regarded as a subversive attack on the revenue system of

on Occurrences 1%

I've taken out a ten thousand pound Tontine on him.

Which preposition to use with  tontine