The Mobley set appears to have been around longer than any set Mosaic has offered. I wonder if the licensing may allow it to remain in print longer. Like many other sets, the Mobley is capped at 7500 copies. I would think it would have sold out quicker. I hope there are more than 7500 Mobley fans. The only older set is The Complete Benedetti Recordings of Charlie Parker, but there is no limit to the number of copies for this one.