Hi! I recently purchased a LEGO storage box from the late 1960s that was originally purchased in London. I've discovered there are a ton of these boxes that were produced in the '60s. Is anyone able to identify which particular box this is and point me in the direction of a parts list? Would love to see how complete it is. The lid slides off. In the last picture below I included the patent number, which is the only identifiable information I could find on the box. Thanks!