Sorry for late reply. Have been away for some days (picking up more bottles). The wines I bought were cheap (most in the 5-7 range) and I bought uncritically everything I could buy. It was kind of taking a chance and see what you end up with after you have opened the bottles:
-Grosslangheimer Kiliansberg silvaner sptlese 1979, GWF
-Rdelseer Kchenmeister silvaner sptlese 1976, GWF
-Sommeracher Rosenberg mller-thurgau sptlese 1976, Winz Nordheim
-Escherndorfer Eulengrube silvaner Cabinet 1966, Winz Escherndorf
-Casteller Hohnart Silvaner 1963, Castell
-Escherndorfer Perle 1963, Juliusspital
-Nordheimer Vgelein 1962, Ott
Then there was the bottles I bought at Castell. The '67 Hohnart and '85 Schlossberg silvaner sptlese trocken.
Short comments: The '67 Hohnart was a tremendous bottle. The '85 Schlossberg was an extreme dry and slim silvaner. Very mineral, high acidic wine. Good, but not for everyone. The Kiliansberg had some oxidation although still drinkable and recognizable as an old silvaner. The Kchenmeister was a positive surprise. Very pure silvaner-fruit for such a producer and vintage. Although a little low in acid, a nice bottle. Even more surprising was the '76 mller-thurgau. Also very low in acid, but nice fruit. Simpler and spicey. The Eulengrube was another surprisingly great bottle. Very silvanerish. Fine purity and complex aged fruit. Starting to get slightly over the top, but still nice fruit and no oxidation. The two '63's have not been opened yet. The '62 was shot. Totally oxidized and the only undrinkable bottle so far.