I collected a spare 803cc engine/gearbox gearstick, a couple of days ago, and it looks quite different to the one I got as part of an 803 engine & gearbox purchase[frame]

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The one on the left is pre-existing (and looks identical to another "spare" I have), the one on the right is the recent collection.
There is another difference - the length of the stick/shaft[frame]

[/frame]The gearknob nearest the camera is made of rubber and is on the "recent" stick, the other gearknob looks to be hard bakelite.
The shape and bend of the shafts is the same - can anyone shed any light on the diferences?

'50 Low-light with 918 Side-valve engine,
'51 High-light with Side-valve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.