Crankshaft ID - WINBERG Lightweight?

[72-SS-L48]

I tried calling Winberg but they were not helpful. Can anyone ID this?

Small journal SBC??

Thanks,
Dave

[MarcDant]

The mains are standard sbc size, the rod journal looks larger than 1.1984 written on there, maybe it should be 1.9984 ( small journal), also a very light heat treated crank maybe 30 * at 3.1 stroke.