I need help on info on this wine!! PLEASE

[michaelfamily]

Hello all,

I recently moved into a new to us house. While digging thru things I found a bottle of wine. It is 3/4 full. It is Ambassador. It reads Ambassador California Rhine Wine. A superb wine. Made and bottled by Ambassador Cellars in Lodi California. Alcohol 12% by volume! I can't find a date. I tried searching online for any info on Rhine Wine and Ambassador Cellars or Wines and I cannot find a thing!
How could I date this and is it worth anything? How could i find this out?
Thanks for any and all help.
You may email me if you would like!
Sincerely,
Shannon Jordan