How many sides to a coin??

Two sides --- Head and tails

Three sides --- head and tails and the round side

As many sides I want it to have as long as I cease to see it as a coin anymore, as long as I no longer only have the coin.

The unconscious knows how many sides it need to take in order for it to be resolved... ... completely.
No point debating about the numbers and depending on theories and get screwed up.... by my own brain.