factory 340 forged crank

I saw that too, but I haven't seen a forged crank with as sharply defined edges on the CWs as the left one; so I mentioned the ringing as no one else had yet.
And again, I haven't seen but maybe a dozen SBM cranks and all were 68 to 73, except for the spaghetti crank I have from a 65-273.
Also, I weighed all my cranks one day, and the forged 340 cranks were all about 55 lbs, while all the others were lighter. I can't recall the difference tho.....