Challenge to the world: $3,000 offered. Linus Yale Jr. offers his Magic Infallible Bank Lock to the public as the best and most reliable lock ever made and perfectly unpickable. L. Yale Jr. & Co. therefore offer a $3,000 reward to anyone who can pick it under the following conditions: a committee of five respectable disinterested citizens shall be selected, none of whom shall be objected to by either party, and their award shall be conclusive. The said committee shall proceed to the store of Linus Yale Jr. & Co., Philadelphia, and select therefrom any one of L. Yale Jr.’s Patent Magic Infallible Bank Locks of Eight Tumblers. The party making the application may take it apart and have the free use of it for three days to take any measurements he may desire. The committee shall then secure the lock to the door of one of L. Yale Jr.’s Patent Burglarproof Chilled Iron Safes. When so secured, Mr. Yale shall be allowed to set up the key on any combination he chooses and lock the door, keeping the key concealed, which shall then be sealed up and placed in the hands of the committee for safekeeping. After which the party applying to make the attempt shall have free and uninterrupted access to the lock for the space of thirty days. During this time Mr. Yale shall take the key from the committee and unlock the door, relocking it on the same or any other combination, at intervals of three days apart, during the time of the trial. If the party making the attempt can fairly unlock the lock during the trial, he shall do so in the presence of the committee and Mr. L. Yale Jr., when the said sum of $3,000 shall be awarded to the successful operator.