'Er, "back in the day" Chrysler hemi cranks were FORGED, not cast.
Having personally made a few hundred forged cranks and made foundry tooling and castings I know very well what the difference is between a forging and a casting.
This crank had a single fine parting line that went around the entire part on a single plane. Not a forging.
The rod pins were cored out, not a forging.
The CW design can't be forged unless it is a twisted forging but since the parting lines were on a single plane, it wasn't twisted. Not a forging.
I machined the od of the CWs when I balanced it; the chips were powder not strings, casting, not forging.
Other than that I'll take your word for it, it must have been a forging.