Ntsuke of a resting sheep Sterling silver

Description

Resting sheep cast from Sterling (92.5 percent silver)  the figure weighs 1/2 ounce and is 1.5 inches long, 1 inch high and 2/3 inch wide. Instead of traditional himotoshi, it has a ring on the top for the cord to go through.  Would make a great charm or necklace. The bottom has some characters incised into it.  I cannot make sense of them.