Paris, France: Dec-53. An advertising postcard for a patent medicine called Penityrol. It was a synthetic antibiotics created to help combat diseases that are transmitted through the air or to help minimize the possibility of an infection after a surgery. What makes this advertisement extremely charming are the anthropomorphic lab rats featured on the the front of the postcard. There are two rats just outside a doctor's office (the Doctor's name is Ratibus). The first rat is standing on his hind legs and is holding a checkered handkerchief, either blowing his nose or holding in a sneeze. The second rat is again standing on his hind legs, but hunched over in pain. He has a red handkerchief tied around his head, and his hand is clenching his jaw on one side. Presumably this rat is suffering from a tooth ache. The back of the postcard has information about the product in French. There is also an address for a Dr. Kohn, whose office is located in Paris. The postage stamp provides the date, December 26, 1953. Measures 6" x 4 1/2"