No go people. It's not about being stolen, I've had my phone stolen before and I needed to send my box and service agreement into Asurion. It could be that he has the box and may sell it but then report it stolen after the fact. I've done business on craigslist plenty of times and actually learned this the hard way about a year ago when I bought a Nexus 4 blacklisted from T-Mobile about 3 days after I bought it and was working. Always get the box with the IMEI sticker still attached when buying phones on craigslist, in most cases your better off than not.
Sent from my Nexus 5 using XDA Premium 4 mobile app