From the above posted Richard C Neiman letter, dated Sept 27,1993:
"The sample is modern...in the "grey area" of approximately 300 years old and may not be scientifically reliable"
300 years old from Neiman's dated letter would be 1693, NOT the 1300's, and Noted, the dating process "MAY NOT be scientifically reliable", which is Neiman's speculation based on the tests.
Once again, this is NOT PROOF, but an attempt to fit questionable facts fabricating a pseudo history in support of a pet theory.
In no way is this evidence that Sir Henry Sinclair sailed a ship named SAINT KATHERINE that "was blown upon Oak Island during a hurricane in 1398".