This is a genuine M-1910 US Military canteen cup made of high-quality stainless steel. It has a unique design and is a perfect addition to any collection of militaria items. These cups are original items from the period of World War II (1939-45) and is not a reproduction. It was manufactured in the United States during the war and # 1 is in excellent condition. The cups have not been modified in any way. Add this unique and authentic piece(s) to your collection of original period items and enjoy a piece of history. 2 are for sale in this listing. The first ten pictures are of #1 listing which is in  excellent condition and the second 10 photos are of #2 cup in listing and it shows more wear. The last photo shows where I got some and my research and I also watched videos but still don't claim to be an expert on these military items. If you only wish to purchase 1 of these please let me know which one you prefer if both are still for sale. Thank you for looking.