QUOTE(veltror @ Apr 20 2014, 12:38 PM)
Click to view attachmentMagnesium Alloy Forging,Race quality and strength,
If you look closely you may discern what looks like push-out-pin marks on the face of the spokes,indeed that is what they are.The heavy pressures developed on the die made it necessary to remove the part from the anvil.Expensive process.
Worth every euro,rare.
Edit:03/21/15
Perhaps a series of photos of greater detail will determine the method used.Was any flash evident on the part?
After some searching,a number on the order of 500 sets were produced,as a source in Aus mentioned.
Removing the tire and testing for "ring-tone"when rapped is a sure method.
As similar designs were for certain pressure cast,perhaps that set was machined in a secondary op.
Pretty sure the test records are available to this day.
Edit:04/10/15
A longtime racer here has informed me that the wheels,though of very high quality,were pressure cast.500 wheels,not sets.