So I own a 3/4" registered chisel because it looked like it was fairly stout and it was a lot cheaper than the mortise chisel was (sorby @ woodcraft).

But, while I have seen some information on what a mortise chisel is, (and why it is so stout...) I have not seen any corresponding information on what a 'registered' chisel is. I am therefore left thinking it is marketing only, but maybe there is a historical pedigree that I am missing...

any fellow monkey (neander...) care to educate me?

TIA