Not only that, the series win was on the back of an unbeaten 20-match record against the country's best provincial sides.
The surviving members of the touring party gathered in Dublin on Friday night while Schmidt was also in attendance, and the former Leinster coach was full of praise for their efforts.
"I must say I was only about five years old at the time so my memories are hazy," Schmidt told the Irish Examiner.
"I certainly remember some of the flying players: the likes of JPR and David Duckham, the guys who got on the end of the ball, the Mike Gibsons, who got on the end of it, kicked it, ran with it and did a lot things pretty productively with it.
"I think it's incredible. Having grown up in the country where you start playing rugby in bare feet in the backyard, as soon as you can get out of your nappies really, and you grow from there.
"For a group to come over and remain unbeaten through the provinces and then win a Test series is something that is incredibly difficult to do and I think it's a measure of the quality of the individuals that are on that team and also a measure of the camaraderie that they share."