White wine | Unknown
This is a bottle labeled '1978er'. Without more information on the label, such as the producer or region, it's difficult to definitively identify the wine. \
However, from the look of the bottle and closure, it seems most likely to be some kind of domestic white wine, perhaps a Riesling or Silvaner. Given the age, it could be an interesting bottle to open, though it may be past its peak. I am unable to determine if it is a quality wine, but it is definetly an old wine.