The sign for "Oakland" uses a mutated "O" / "i" combination handshape. The handshape is an "O" with the pinkie sticking up.
Move the hand downward, back up, and then down again.
OAKLAND:
(Model: Byron Cantrell)
Dr. Bill's notes:
This sign uses a "very" interesting handshape. The "O" is obviously mapped to the first letter of "Oakland." Then the "i" shape (the pinkie sticking up) can be thought of as representing a type of "D" shape. The normal fingerspelled letter "D" uses the index finger, not the pinkie, but that is not the point of this sign. The point is it is showing you an "O" and then it is cleverly mutating the "last part" of that "O" (the pinkie) in such a way as to cause the handshape to become sort of a "D."
Notes: