1960-1962 Valiant/Lancer thread

That's a '61 model, through and through. Grille, grille badge/hood release, deck lid centre badge, "Plymouth" nameplate ('60 Valiants were not Plymouths!), and triple "sergeant stripes" atop tailfins are easy giveaways; there are more we can't see in these photos. How are you discerning a build date from the fender tag?