This is authentic Japanese tanto dagger with shirasaya Craft man Yoshinori who lives in Yamashiro country (Now Kyoto) There is no certification but I think it was made in mid Muromachi period Attribution provided for reference only, subject to authentication Hamon : Suguha Blade Length : 340 mm (13.4") Length　　　: 428 mm (16.9") Curvature : 0.6 mm Wide : 25 mm (1") Thickness : 5 mm (0.2") Tanto weight : 198 g (7 oz.) Total weight : 343 g (12.1 oz.) Mekugi hole : 1 w/ shirasaya Condition : Overall in good condition with normal wear, scratches, scars and stain with bag Because it may take some time (about 1 month) for the export procedure, please understand. Under Japanese law, it is forbidden to send the "Registration Card" to the buyer. Please note that we will send you a copy of "Registration Card" to the buyer. This item is as pictures show without any warranty, please see pictures. I try my best to describe items accurately and give them attribution, but it is still my opinion and you have to depend on your own judgment when you bid. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.