Drop box means a metal container attached to each gambling table into which the dealer must deposit all chips and cash collected during play and, if required, insert card game inventory control slips. Each drop box must have:

(1) A box lock - A lock that secures the contents; and

(2) A table lock - A separate lock securing the drop box to the gambling table. Card game licensees must key this lock differently from the lock securing the contents of the drop box; and

(3) An opening - An opening through which currency, coin, chips, forms, records, and documents can be inserted into the drop box; and

(4) A label - A permanent number clearly visible which corresponds to a permanent number on the gambling table to which the box is attached. The shift during which the box was used must also be included if drop boxes are removed from tables more than once during an operating day. Card game licensees may keep emergency drop boxes if the box has the word "emergency" permanently on it, and, when it is put into use, licensees temporarily mark it with the number of the gambling table.