You are bidding on one box of 25  #3  Orton large self supporting (no plack needed) Pyrometric cones.  The picture shows a #6 but this is for a #3

These cones are fragile and if a couple are broken on arrival they will not be replaced as the postage would be prohibitive.

These cones are 2 3/8" high. They indicate about 2106 F. Pyrometric cone table at http://www.sheffield-pottery.com/v/vspfiles/downloadables/cone_wall_chart_horiz.pdf