Tony Vella wrote:
The "Plan sur de Valencia" stamps were issued around 1963 as a postal
tax towards the rebuilding of Valencia. Were these stamps available
throughout Spain or just in Valencia? Thanks in advance.

My Michel catalogue says they were used in Valencia and 50
surrounding towns, from 1963 to 1985. (How long they were actually in
use is not mentioned - 1985 was the date of the last issue.) A 1957
flood in Valencia was the impetus behind building a floodway, the cost
of which was subsidized by this postal tax.

Ryan