The blue one is a
PR-10 -- the clincher (so to speak) is the Reynolds 531 "3 tubes renforces" sticker by the gear levers.
The silver one is a UO-9.
Both are from the late 1970s, and the initial "7" in each serial number
may signify 1977.
__________________
"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