Definitions for "Pontil Mark"
Keywords:  punty, rod, rough, blown, polished
Rough mark left where article was attached to pontil rod before being allowed to cool and broken off. From c 1800 -1860 usually ground and polished out (from c 1775 in facet-stemmed glasses)
A rough mark on the base of a piece of worked glass where it was fixed to a pontil.
a variable size and type of scar left on the base of a bottle by a pontil rod