Looks like a number 3 all over would have saved him a few grams.
In the 1980s I believe he was active in triathlons. A non-cyclist1 triathlete friend, who knew nothing of his past, said he was the life and soul of the party at triathlons.
1 She knew that the bigger the sprocket, the easier it was to climb. She thought the same applied at the front, and rode the (hilly) Bath triathlon on a 52-tooth chainring.