Lady on the tube today had a lovely soft floppy bag. Cream leather, flap over top , the strap was black nylon, it had a cK logo on the front , the bottom was a square base. Imagine the size of a Loewe puzzle and the squareness of that, but with a flapover. Ther was no zip under the flap. The flap had a raised section in the middle, like a sewn down buckle. I've googled but to no avail. Anyone recognise it?