Japanese 1 Shu (1853-1865)

Turn it 90 degrees clockwise and you'll get the right orientation :D

The first picture says "One shu silver." It's just a measurement of weight.

On the back, the incuse part says "set," and the other words, reading from up to down, right to left, says "Ginza (made) or (actual) depending on how you read it. Ginza was the primary mint during the Edo and Meiji Period in Japan and it means "silver seat"

Here's a good site from the Bank of Japan for reference. Flip through the other pages too and it's a really good guide to the history of Japanese Money!
http://www.imes.boj.or.jp/cm/englis...story_08.htm