This actually displays the overall detail of an AU in my opinion, with a very sharp Reverse, showing a full center rib on the Eagle's left (facing) wing feather at top.  However, while there is some luster under the Reverse toning and on the Obverse around the rim, overall it lacks the luster than I would need to call it an AU. Possibly lightly cleaned a Stone Age ago, however the color is what I would call normal and expected for the age of the coin.  The last of the so-called "Philippines" dates, a bit more commonly found on the West Coast than the previous two San Francisco issues.   A nice sharp example.

0913-06