This cache is placed with a tip of the hat to Hunster in the hopes that he won't be mad that I stole his idea. After all, although a General wants his Colonel, he needs a lot of Lieutenants.
In the U.S., the "bit" as a designation for money dates from the colonial period, when the most common unit of currency used was the Spanish dollar, also known as "piece of eight", which was worth 8 Spanish silver reales. ... When it comes to two bits, the quarter-dollar stands for the required amount.
"Shave and a Haircut" and the associated response "two bits" is a 7-note musical call and response couplet, riff or fanfare popularly used at the end of a musical performance, usually for comic effect. It is used both melodically and rhythmically, for example as a door knock.
This should be a quick "Park-n-Grab" during business hours but be aware, this is a high Muggle area so USE EXTREME STEALTH