1873 Japan 10 sen question

I just picked up a nice one of these - in my Krause it has a listing for type I and type II but offers up no description - how do I identify which type it is?
MS66 taste on an MS63 budget.
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Comments
In Type I the two characters are completely separate and distinct. In Type II the bottom horizontal lines are connected.
There are also two varieties of the Meiji 9 (1876) coin, but in that case the "sen" character is involved.
Here is another one I picked up. Not particularly valuable but I like the design!
1930 50 sen
I generally avoid trying to grade coins solely from pictures, but I just don't see the luster that an AU should have. The Showa 5 50 sen, on the other hand, is not only lustrous, but doesn't show any of the signs of cleaning that one would expect from a Japanese coin of that vintage.