I just thought I would post my findings as I'd be keeping records for my enjoyment. I noticed different banks get supplied from different coin processing chains or armored carriers such as Brinks,Loomis, Garda etc. Most boxes are N.F.String & Son, however some are quite diferent. I have 5 or so full boxes of mint 2011's that I had picked up at some time. Even had a few that were obviously beginning to mix with the 2011s, as rolls were rainbowed with about 50-75% mint 11's. I am curious so will post my findings of diferent sources in my area.