One Finger Spin
Description This is a pretty simple trick.
Start Hold a coin edgewise between the tips of the middle finger and the thumb.
Directions Now pull back on the top edge with the index finger and rotate the coin 180º. Repeat until bored :-)
Variations You can also do the spin in the reverse direction by pushing forward with the finger.

Alternating Axis Spin (165k)
  1. Start as above and perform a 180º spin of the coin.
  2. Grab the coin edgewise between the index and middle fingers and release with the other fingers.
  3. Spin the coin 180º by pulling back with the middle finger.
  4. Grab the coin edgewise between the middle and pinkie fingers.
  5. Spin the coin 180º by pulling back with the ring finger.
  6. Reverse the steps to get back to the start.