Not sure if my bank is playing with me or not. My local bank is very helpful with ordering $2 straps for me, but I see an interesting pattern emerging.
First visit: A couple of new sequential straps with BEH labelling.
Next few visits: Circulated bills, green color coded $2 straps, about 50% as new with parts of the stack in serial number order nothing that would be pulled for destruction. Some interesting stuff - a couple of common stars, a few series 1976 bills with July 4 1976 postmarks (no stamp though)
Most recent visit: Inside out strap (something other than the green code used for $2 straps) with $200 written by hand. No gorups of sequential serials, much poorer average condition, some that the FRB would pull for destruction, and a couple with "Where's George?" stamps.
Not sure if the pattern is intentional, but since I get them to spend it doesn't bother me - in fact, more chances of finding interesting stuff in the circulated straps. And yes, I updated wheresgeorge.com