Info from Official Mafia Wars Blog
We are excited to announce that August will see TWO new Collector's Edition Items added to the Marketplace each week, one on Tuesdays and another on Fridays. On each of these days, a count of 2,000 will be made available at 2:00am PDT and an additional 5,000 will be made available at 9:00am PDT. You will have only 24 hours to buy yours (35 RP each), but don't wait until the last minute, as these exclusive items tend to sell out quickly! Visit the Marketplace every Tuesday and Friday to try to nab one of the precious 7,000 of each Collector's Edition Item. Check out the schedule below!