Vincent must have had some kind of pull with Australia Post.. to send the engagement ring to SA, and to a suburb of Adelaide from Leeton over Easter , ( he must have held on to it until the Post Office opened on Tuesday ) .. . and for it to get to Markus, no small journey for a parcel. Parcelled stuff goes to Wagga then to Sydney and is flown to Adelaide then van to the outlying suburbs. I am thinking he probably had to rock up to the P.O. himself, to get a correct postage stamp on the envelope or docket that he sent it in. He wouldn't want to risk just an ordinary stamp and envelope.. too unsafe, and too risky..... he would have had to have it weighed and signed off on, probably registered mail.. who knows.. But I think of him standing there in the Leeton P.O. going thru all this rigmarole, without batting an eyelid. . .