For just $48, someone got a real deal on these long black leather opera gloves from seller "junkonsale."  These unbranded gloves were a size 8 and measured nearly 24" long.  
They featured elastic gathering at the wrist, which is always a nice touch.  However, they also featured an unfortunate horizontal seam across the wrist area, like they were a shorter pair of gloves that were elongated later.  
The seller stated that they were purchased in a vintage shop in Sacramento, CA.