It looks like the inside of the 2 protruding from the 3. Do you have a jewelers loupe or good magnifying glass? The best thing to do is look at it closely right under a bright light with a loupe, and move it around looking at it from different angles. Or take photos from different angles with the light concentrated on this area then put it on your computer and crop this area and enlarge it as much as you can without it distorting the image.I usually take pictures with my camera lens fitted into the jewelers loupe, turn on the macro setting and put it right up to the coin then you can crop the area already enlarged and usually you can still zoom in quite a bit.