27th November 2011, 02:10 PM
I am pretty certain that a laser scan will answer some of your questions as you would be able to look at the depth and base of the incisions and could probably work out whether they overlap and identify later 'scratches' from earlier 'scratches'... I'd have though there might be a number of research facilities especially amongst the Scottish universities who'd be interested in doing this as a one off.....
With peace and consolation hath dismist, And calm of mind all passion spent...