I enjoyed this flash fiction story. The images are clear and realistic. Your first story--you came up with a good one. I, too, recently tried my hand at flash fiction. In fact, I'm in this contest, too. You're a formidable foe.
This is a terrific entry into the contest. I can imagine all the neurons firing up in alarm at reading call 911 across a dollar bill. Is it old, is it new, but the third line gives us all the clues we need.
Really a fine job with this not so easy task and I wish you much luck with the Contest Committee.