This 2D pinout drawing gives me few clues about which side I am viewing it from. I assume it was viewed from the side is "flat" and does not have the "side dimples" or the round hole since they are not shown in the pinout image. There is also a lightly printed symbol on one of the pins that you can see in the actual picture. I do not recognize the symbol though.
1) Is my interpretation correct? 2) If I am wrong, will connecting this regulator backwards, to a 7.5 volt source, damage it? 3) What does the symbol mean?