Simon, doubt they would be. Both use different handles.
Had a look on VAGCAT (online version of ETKA) and they're different part numbers. Mk1 = 171837211A, Mk3 = 1H0837211B.
Edit - I suppose with that part number (I think it's the right one? Click the link and double check anyway) you could try call up VW Australia or try a parts dealer for it!
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