S1·E35 Little Black Bag

A struggling doctor takes his instruments to a pawnshop because his wife complains about their lack of money. Once in the shop, he makes a deal with the pawnbroker for $20.00 and a mysterious medical bag. Later, it is discovered that the instruments in the bag can perform "miracle cures". Upon close inspection of the instruments, a patent date of July 18, 2450 is revealed.