Locking gift box

1. A display box comprising,

a) a base having a bottom and at least one base wall that terminates in an upper perimeter, the base wall further comprising a slot,

b) a product display holder positioned in the base, and

c) a cover for the base, the cover comprising,

i) a clear window, and

ii) a frame that contains the window, the frame irreversibly engaging the upper perimeter of the base wall, said frame comprising a perimeter wall and at least two containment walls, said containment walls being spaced from said perimeter wall to allow the thickness of the base wall to be accomodated snugly between the containment walls and the frame perimeter wall, the frame further comprising at least one elongated rib offset from, and positioned between, the containment walls and in a location that mates with the slot in the base wall when the cover is properly attached to the base.

2. The box of claim 1 in which the product display holder includes a raised portion sized and position to separate the clear window from the display holder.

3. The box of claim 1 in which the slot is located in a region of the base wall close enough to a corner of the base wall that the corner provides the region with strength resisting lateral wall movement that would disengage the slot and the elongated rib.

4. The box of claim 1 in which the slot and the elongated rib are positioned close enough to a box corner to provide rigidity.

5. The box of claim 4 comprising two elongated ribs positioned between the containment walls.

6. The box of claim 1 in which the elongated rib has a beveled bottom surface to allow smooth wall displacement during assembly.

7. The box of claim 5 in which the elongated ribs are rigid and are integral with the cover frame.