It has a G4 carby so I doubt its a 1971 cylinder (although Norm can show how a G3 cyl can be made to take a G4).
I am sure 3-71 was a bynorm number, so maybe it was recond back in the day
As a side note, the victa genuine part for these barrels is en70714a for regular, then slightly different for +020. Wouldn't surprise me if it was a recond