Back when I was working, I started stuffing $100 dollar bills in a file at home. After awhile it got to maybe $9,000. It was kind of cool to have cash I didn't need. Then I sold a major collectible for almost $10,000 and I added that. Then I sold an old car I had, also for cash. Now I was in the low twenties and I thought I better deposit it, but how? It was all in $100 dollar bills, that is all I kept in the file.
I decided to just go into several branches of the same bank and deposit it. One branch had a young male teller. When I dumped down just under $10,000 in hundreds, I heard him audibly gasp.
Surely these guys see lots of large cash deposits, don't they? This was in Marin County California. Maybe not.