The YG Octa Lune with is absolutely collectible as this dial was discontinued when the brass movements were changed to gold ones. One of the reasons was FPJ felt that a YG dial was not a suitable match to a RG movment. As for your question about wich is more collectible, well that depends on the collector. Will it be worth more then new versions? Again not really the subject of this forum but over time I think all Journe's will continue to increase value to reflect the creativity, ingenuity, craftmenship, scarcity, innovation, and horological genious that all FPJ watches posseses.