From CoinGuard.com:
YOU DEPEND ON THE COIN SLOT. PROTECT IT! WITH A SIMPLE, COST EFFECTIVE, PERMANENT, ONE PIECE SLOT PROTECTOR
Coin slot vandalism and theft are epidemic. Most unscheduled maintenance calls ... are related to the stuffed or jammed coin slot ... or the additional damages which result from the obstructed coin slot...
I had no idea people were actually vandalizing these gorgeous coinslots! This is outrageous!! Then I saw a picture of what CoinGuard.com was selling...
Nevermind...