AU-55. The busiest of all reverse designs, bar none. Note the difference in color of the (few) field areas as they approach the design elements. You can see a change in the color, and if you have it in your hand you can shift it back and forth to see that field disturbance. You have to use the obverse, since the reverse has almost no fields.
That is the first thing to check on the Texas, especially for the reverse, because many of them have slightly light strikes which looks as if it's wear.