You have the next wine in the heirarchy of Rioja. It starts at
Joven (young fresh wines really never oak aged)
Crianza (a year in oak then bottled)
Riserva (A year in oak and 1 yr in bottle)
Riserva Especial (2 yrs in oak and 1yr in Bottle)
Gran Riserva Especial (3yrs in oak and 2yrs in bottle)
These are all guigelines and the Bodegas can age these wines for much longer then the above limits. The '95 Riserva Especial is a great bottle, you can drink it now or over the next 5-8 years easily.