The UO-8 did not change much during the early 1970s. By 1975, US Export versions were saddled with horrible Simplex stem shifters, but it appears that European models were not. Also, the European description in your link shows a triple chainring, which was not available in the US market. The decals on my 1970 UO-8 (see signature) and the 1975 in your link are virtually identical.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069