A Russian ink-dating expert told a probate hearing yesterday the method used to determine the age of ink on a will allegedly written by tycoon Teddy Wang Teh-huei was deeply flawed.
Dr Valery Aginsky said tests that found part of the document was written after 1990, the year Teddy Wang disappeared, had no sound scientific basis.
He also told the Court of First Instance that the method adopted by US-based ink-dating expert Erich Speckin was prone to producing false results.
Mr Speckin had earlier testified for Chinachem chief Nina Wang Kung Yu-sum's father-in-law, Wang Din-shin, in the probate tug-of-war over Teddy Wang's estate.
He had concluded that three pages of the four-page will dated March 12, 1990, were less than four years old.
Mr Speckin conceded his ink test only had 68 per cent accuracy.