35mm Slide Boxes (Kenilworth CV8)

With thanks to Edward, I now have a supply of these slide boxes, but a few more would be appreciated if anyone has some. They are the type in which 35mm colour slides would come back from the film processors in times past. Suitable to hold 36 - 40 slides in mounts. Either the later, long boxes, or the earlier, more cuboid ones of either type (see photos)