Mint mark-- Very square and boxlike S
mint mark contains a notch in the upper serif
raised dot or lump in the upper loop
VDB-- The D and B have a distinct shape
D----- the lower portion of the loop of D slopes at an angle
B----- The center bar of the B also slopes at an angle
Four die pairs were used to strike the 1909-S VDB
the mint mark appears in four slightly different positions
Knowing these positions will help in determining and identifying several alterations.
Odd die variations--
short raised die gouge protruding from the rim above RU of trust
a die chip in the B of Liberty
raised Die gouges extending into the fild from the left wheat sheaf.
These die markers may or may not be present on all of the 09-SVDB coins, but to find anyone of them on a coin helps in determining the authentisity of the coin .
This is one coin which should be bought authenticated and slabbed by a top
TPG.
This info is available in the PCGS Grading and
Counterfeit Detection guide,, the pictures area great help in committing these characteristics to memory .
Metalman