and key, into which the check or checks will securely fit. Only the
signer of the check and the officer of the bank have the key. The
latter, after paying the check, holds the case for the depositor. This
would make it impossible for the check to be raised, or, if lost, for a
dishonest finder to have it cashed, as he would be unable to give either
the name or the amount. The cases should be made very cheap so that a
depositor could possess a number at a trivial cost.