Retail World War 1 Haversack

Product Name: Retail World War 1 Haversack
Im not super knowledgeable with this item, but from the research retail I've done, Im confident it is a WW1 and not a WW2. It seems to have all of the aspects to look for in a WW1 from the button closure on the pouch, to the buckle shapes to the stitching. It seems to be in fantastic shape for being that old and I also learned that the outside pouch is often missing from these. It also has retained the leather bayonet guard. Please feel free to contact me with any questions or for additional pictures. Thanks for looking!.