I ran into a couple of 1.3's with march date codes that had the checkerboard sticker on the bottom and the live dash, I don't think those are reliable indicators. I have a hard time believing you can't find anything older though. I can pretty much pick my version just by tossing the stack at circuit city and best buy, they have ones with 2 week old build dates, and original 1.0 systems, and I've tossed the stacks at multiple stores in the area just out of curiosity, and found all versions available. Best bet is to take a buddy, look for extgra piles of xboxes in other areas of the store. Most stores are terrible about rotating stock, one of my pet peeves as someone who used to work in a grocery store( if they don't rotate stock, you get *old* food sometimes)... Check the bottom shelves and overstock locations, or even try other stores - I prefer circuit city because they have the "price drop" refund protection, and no hassle returns - if I power it up and no sammy - back it goes!...