I would have been more worried (for your personal safety) if it was a roll of 100's.
Abalone springs to mind and no doubt many of you will have also been asked.
On the flip side, I was asked to leave the aircraft (before it took off) because I had live ammunition and 40 cal pistol in my bag. They somehow to my absolute amazement made it through screening when I inadvertantly took the wrong bag on board. They didn't make the same mistake again the next day when I checked in again. (It was totally unrelated that they found out they were in my bag once I had actually boarded)