Greetings!  You are purchasing an unusual Japanese set of Koban oval .999 fine gold and .999 fine silver coins.  They both test positive for .999 fine.  The gold coin restrike weighs 3.7 grams.  The silver coin restrike is 3.8 grams.  They come with their original box.  The Japanese Koban was valued at one ryo.  The rye was equal to 3 koku of which a koku represented the amount of rice needed to feed someone for a year.  Insured shipping will be $10.00.  I guarantee my description so buy with confidence.