The new Ray Iles iron for the Stanley 10 1/2 was in Saturday's mail. It is a nice looking cutter, ~3mm thick. the OEM is ~2mm thick so while thicker it is not what you would call thick like most new irons.
stanley10halfCutter.jpg
IIRC, Ray Iles still makes his chisels and plane irons the old fashion way where they harden the iron first and then grind the bevel. I'll be reminded soon, once I start to flatten the back.