20 Euro Cents

Spain's euro coinage was introduced in 2002, but the 2004 date places this piece in the transitional period when the Spanish Mint was still working through die and planchet consistency issues flagged by the European Central Bank. The X#Pn5 reference designates it as a pattern rather than a circulation strike — meaning this was produced for official evaluation or presentation purposes, not public release.

Pattern euros from this period were occasionally distributed to government officials and mint delegations attending international numismatic conferences.