Dr. Robert Feather, an English metallurgist and technical engineering writer, tested the lance for a documentary in January 2003.[9] He was given unprecedented permission not only to examine the lance in a laboratory environment, but was allowed to remove the delicate bands of gold and silver that hold it together. In the opinion of Feather and other academic experts, the likeliest date of the spearhead is the 7th century A.D. – only slightly earlier than the Museum's own estimate. However, Dr. Feather stated in the same documentary that an iron pin – long claimed to be a nail from the crucifixion, hammered into the blade and set off by tiny brass crosses – is "consistent" in length and shape with a 1st-century A.D. Roman nail.