once the case is opened application_number US 82565092 A description referring to the drawings and especially to fig1 a combination lock mechanism 10 is shown attached to a briefcase 11 and having a latch retractor button 12 on the top thereof having an elongated slot 13 therein with a wheel release button 14 mounted through the slot 13 for sliding on top of the button 12 the lock 10 has a lock mechanism housing 15 having three combination or indicia wheels 16 protruding through three windows 17 the housing 15 also has an opening 18 therein for receiving an end of a hasp type lock and has a latch bolt 20 protruding into the opening 18 a hinge hasp not shown which may be spring loaded swings one end into the opening 18 for locking with the latch bolt 20 to thereby lock the case 11 the hasp lock is placed on the opposite side of the case 11 from the lock mechanism 10 in operation the lock mechanism as shown in fig1 will have the hasp lock locked with the latch bolt 20 until the appropriate combination of the wheel 16 is turned from the zero position as shown in fig1 to the appropriate combination for releasing the bolt 20 once the combination is set the latch retractor 12 is slid to the left to pull the latch bolt 20 backwards to unlock the case moving the latch bolt 12 moves the wheel retractor button underneath and pulls it to then release the combination wheels 16 to return to the zero.