50 lire Borgia Tower and St. Peter's single
On May 22, 1975, the Vatican issued a series of stamps featuring images of fountains in Vatican City. The series, also celebrating European Architectural Heritage Year, is composed of six values.
"POSTE VATICANE" and the respective value appear along each stamp's border. On the 50-lire stamp appears the fountain in front of what was a bakery in former times, and also the Borgia tower, the apse, and the cupola of St. Peter's Basilica.
The six stamps were designed by Professor Lino Bianchi Barriviera and were engraved by E. Donnini, R. DiGiuseppe, and F. Tulli. The stamps are horizontal in format and measure 48 x 40 mm. Printed in sheets of twenty-five, they have perforations of 14. The stamps were printed in offset and chalcography in two colors on white glazed paper. The Polygraphic Institute of the Italian State printed 1,600,000 complete sets.
"Pentecost Issue." Vatican Notes 24, no. 1 (July-August 1975): 3.