Give an applaud to Rongpong to be able to make a bigger scan of image in #30; It's careless of some one!?!
For the ones who're interested in the story of Christian history (Aj Kammant and Aj Thanin would know better than me).
The first story is related to Jone of ark. The doubled-barred cross could be called the Cross of Lorraine which comprises a vertical line with originally two evenly spaced horizontal bars. But right now, the bottom one is smaller than the top one. It was originally a symbol of Joan of Arc, who is from Lorraine, East France.It is a heraldic cross, used to represent the freedom of French Lorraine from Germany.
The second older story is related to Crusade. The Lorraine cross was given to the Crusades by the original Knights Templar (you will be familiar with this name from Davinci's code) during the ancient time.
Right now, this emblem is originally used as seals (stamps used in East Asia as a form of a signature) by American Lung Association and related organizations through the world, as for the "crusade" against tuberculosis especially during Christmas.
Ref: Wikipedia