Held in Scotland as part of the Scottish Rugby Union's centenary celebrations, the tournament featured players from all eight of the members of the IRB.
Wilson, later wrote of the decision to hold a sevens tournament, "It seemed most appropriate to us, in our Centenary Year, that we should pay some regard to a part of the game which has proved exhilarating and entertaining to us.
It was held on 7 April 1973 in Edinburgh, and all the International Rugby Football Board countries were represented, with the exception of South Africa.
However, even though sevens had been established for 90 years, even the event program recognised its contemporary status by the inclusion in the inside front cover of an advertisement for Peter Scott Knitwear, featuring a man and woman in sweaters, looking amazed and accompanied by the caption: "International Seven-a-sides.
The three Browns, all unrelated, Frame and Gill all from the Gala club joined a former Galalean in Stan Davidson and Colin Telfer, as the main Scottish side.
Fergus Slattery needed only to hold on to the ball to preserve this lead but instead let loose an errant pass, which was intercepted and the England full international winger, Keith Fielding, was able to run in the long try.
Loughborough Colleges' Fran Cotton was the captain and in the final both Keith Fielding and Andy Ripley scored.