*** We are very sorry that it looks like the size 06 will sell out. We never anticipated the ring would be this popular in this size. Please consider the option of wearing one of the larger rings on a chain as a necklace. Thank you so much! *** This is the original ring, not the Netflix knockoff. This is the 2nd in our Secret Decoder Ring Series, the Secret Window Cipher. It is a substitution cipher, where each letter in the alphabet is replaced with a number. The top band spins, allowing the secret window to reveal a number above each letter of the alphabet. To use: Take each letter in your message, and replace it with the number shown in the window above it. MEET AT NOON becomes 15-7-7-22 3-22 16-17-17-16 Send the message to your recipient. They must have a ring (or know the substitutions) to decipher the message. More ring versions may be seen at shopretroworks.com If you are a retail store, please contact us for wholesale availability.