Absolutely nothing. That wine went bad decades ago and is way too common to be a collectible.

A botrytized wine is a wine covered in mold. The Botrytis cinerea or noble rot let to the development of the spatlese. These wines make delicious sweet dessert wines. The mold gives the wine its flavor.

There are many German wines in blue bottles. It could be a "Schweppenhäuser Schloßgarten" or a "Windesheimer Schloßkapelle", for instance.

All wine goes bad- eventually. Many factors go into whether it'll last for decades or more. In this case, it will probably taste ok because of the initial high-sugar level associated with Spatlese wines. It will medium-tawny colored and probably not very sweet, but it will definitely be interesting to a wine enthusiast. Have a newer bottle ready in the style you prefer in case it's undrinkable to you.

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -PA---SE. That is, eight letter words with 2nd letter P and 3rd letter A and 7th letter S and 8th letter E. In alphabetical order, they are:

spathose

spatlese