A real Iacopini Super racer for children, no eyelets on the dropouts, serial number, Nisi rims, Vittoria tubes, drilled brake levers, derailleurs, ... The firm is located in Pontedera nearby Pisa in Italy and still activ.

Minestrini, an Italian brand until 1960. The bike is from the '50ies, has Gnutti components and a Manubri Schierano Torino stem. 
(Thanks to Marco)

Norta, a Belgian brand of bicycles, roots in Olen, with a passion for quality during more than 90 years over three generations. This children's race bike is presumably from the '60 ies.

Vintage steel race bike Gazelle gold 1975

Vintage steel race bike Diamant 1972 Campagnolo Gran Sport

Vintage steel race bike Gazelle from 1979 silver

Vintage steel race bike Gazelle red 1979 from Davy

Vintage steel race bike Plum Vainqueur 1976

Plum, a humble bike shop based in Ghent, Belgium, has a great name in cycling and it can look back on a history of over a hundred years.
The shop started in 1910 as "PDS", which referred to its founder's name - Pol Desnerck. A few years later, Pol changed the name to La Plume, French for feather

Vintage aluminium race bike Vitus 979 from 1985

Debuting in 1979 the Vitus 979 frame became one of the most successful racing bikes ever built.
Raced by many including Australia's Phil Anderson and Allan Peiper, Ireland's Sean Kelly and Stephen Roche.