This sounds like bill discounting, as described in 1874 in https://en.wikipedia.org/wiki/Lombard_Street:_A_Description_of_the_Money_Market https://en.wikipedia.

This sounds like bill discounting, as described in 1874 in https://en.wikipedia.org/wiki/Lombard_Street:_A_Description_of_the_Money_Market https://en.wikipedia.org/wiki/Lombard_Street:_A_Description_...