There are no published pics. The only thing I have is a scan of the newspaper article from 1972, and it leaves a lot to be desired. I'm trying to find it, but I think it's on the computer out in the shop. I'll check tomorrow.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.