SPAIN BLOCK OF FOUR SUPPLEMENT 1950/65 (mounted on clear or black)

The block of four Spain stamps from 1950/1965, mounted in clear or black, is an example of the evolution of Spanish philately during those decades. This type of piece is valuable for collectors interested in postal history and the evolution of stamp designs and themes over time.

Orientative description generated from the data sheet; please review the photographs to assess the actual condition of the piece.