This is a rare item. It is the lovely and detailed Combine Harvester first edition, produced for a short period in 1960-1 with metal tines. This was normally made with red or yellow wheels but here it has been fitted with orange wheels and this is probably as one in a set where the other elements also had the orange wheels fitted.
There are very few of these around now and this one is also in super condition and has fully working features of a lifting tine unit and it also rotates when lowered.
An exceptional addition to any collection.