Carddia International Morse Code Educational Flash Cards (Itu Standard), 53 Pieces, Standard Playing Card Size, Sturdy, Water Resistant? Comprehensive: 53 Flashcards Collect All English Letters, Numbers, Punctuations And Most Important Procedural Signals In International Morse Code. ? Informative: One Side Displays A Code, The Other Side Displays Its Character. The Deck Also Includes The Codes Which Are Widely Used But Not In The Official Itu Standard Such As Semicolon (;) And Exclamation Mark (!). This Product Includes A Sheet Of International Morse Code. ? Valuable: Durable Paper