Definition of "argental"

After the deperdition of Indagator, having an appetency still further to pervstigate the frithy occident; being still an agamist, and not wishing to be any longer a pedaneous viator, nor to be solivagant, I brought about the emption of a yaud, partly by numismatic mutuation, and partly by a hypothecation of my fusee and argental horologe.

1856, Samuel Klinefelter Hoshour, Letters to Squire Pedant, in the East, page 28