Boxer Shaker

I do not know if this vintage dog shaker is salt or pepper, but has four holes. There is no manufacturing information, but style looks like older Japan production. It measures 4 1/4 x 2 3/4 x 2 inches. The underside is not glazed and there are some small rough areas. There are many manufacturing flaws (normal for pieces manufactured in Japan at that time period). I need your zip code to calculate the postage.