The New Miniature Numbers disappeared from the Mettoy Catalogue in 1954. This must be a unique and quite special item in Mettoy / Corgi history.

Although this chunk of metal has polished to a lovely bright silver (with a golden radiator grill) and is not as golden brown as those shown in this illustration from The Great Book of Corgi, the style is very similar - see how the wheel areas are represented.

I have also acquired and will include in the sale an example of the model that would have been produced in the early 1950s.

Although not obvious from this photo, or even at first glance on the desk, the inside of the car is chock full of mechanisms.  I haven't got an original key but the clockwork motor can be wound up and off the model goes. At the front, the 'fog light' can be moved towards the left or right which, in turn, changes the angles of the wheels. This is remarkably accurate - not the axle rotating about a central point like Dinky did for years and which never looked right, but a form of parallel steering which worked wonderfully well and looked right too. Amazing.