OK,
Here's (perhaps) what you're looking for, Pyramid..(Sorry: Sphinx).
Randall strikes about 100 pieces of blade stock at one time.
Per Scott: "No 2" pieces are exactly the same dimension. When the blades are ground a mic is used and some blades require more to be removed than others...hence, some are lighter, due to more metal being removed than the ones that appear "deep-struck". So, for my money, I'd rather have a deep struck blade. It could be (actually) stronger??
Sphynx (spelling?): Some of the "other forum" posts you are speaking about, I think, are more leading towards different stamps for different "eras". That is not what I am addressing. Perhaps Scott can pipe up later..."butt"...(There's that word again, folks)...the shop has been slammed and I told him I would attempt to explain, albeit...non-minutia...hope this helps.
Stay sharp, Capt. Chris
PS: Wally & Crutch get points for (jointly) coming up with the best results. (No $$$, mind you...just points)!
CCS