It's a replica of a Viking sword - the pommel is a distinctive "Viking" style (i.e., a style common on Viking-age AKA Carolingian swords). The scabbard isn't accurate for a Viking sword, and neither are the details of the blade (double-edged, straight, and relatively wide are "Viking", but not the narrow fuller (groove) or the diamond cross-section tip).

If you search Amazon and/or ebay for "brass viking sword" or "brass lobed viking sword", should find some for sale. E.g., https://www.amazon.com/Ulfberht-Lobed-Viking-Handmade-Longsword/dp/B071XYWLDV