A walnut box containing a large collection of mini-bricks

This brings back memories of my lego days - A walnut box measuring 30cm by 21cm and standing 11cm high, with a removable tray packed full of between 600 and 700 mini-bricks. There are about 400 basic two-brick building lots, some singles, two brick up to 10 brick long white bricks, pillars, fencing a couple of windows and a door and various roofing arrangements. They are made of rubber. The roofs are marked Made in England, patent registered, Mini-bricks. Can still be used to build things with (as you can see) although the white bricks are fairly brittle. The box itself has a veneer panel and some stringing missing. It also has menibricks scratches onto it in a child's hand. Interesting collector's item.