If I remember right, the vintage gear she obtained are the master works of Gerolt. You might remember him from before your break as the drunken kettle forging blacksmith who you recruit to reforge your job's relic weapon. The gear is considered vintage because he crafted them some time ago and because they were maintained poorly they've become weathered, but they can be restored to their original state using an item called Sand of Time. This item basically reverses time and returns them to their original condition.
Hope that helps![]()