Must have been an ' AHhhh ' moment when you pulled that Montell insitu all the way out
As a matter of passing interest. Some base tangs have rediculously small notches for their size and we say
'how could they be of any value'
Well there was a reproduction hafted BT at the Temple show. It was done like the pic on the front cover of your book only with the base all the way through so the little notches would catch a couple loops of the hafting material