Board Thread:General Discussion/@comment-28776596-20170117185125/@comment-4010415-20170117225635

Like Arkantos said, the Vale king's sword is depicted as a different-looking sword than Crocea Mors, so it probably isn't the same sword. I more so theorize that the sword Vale's king used was a Relic, maybe Destruction, and it's colored orange in the WoR because it was later given to Vacuo to lock away somewhere in Shade.

Just like Arkantos, I'm pretty certain Crocea Mors isn't a Relic, considering Qrow said that part of the reason the Huntsman Academies were built was to safeguard the Relics. All four Relics are hidden in all four Huntsman Academies. So, if Crocea Mors was a Relic, it wouldn't be in Jaune's hands.