Duncan told ABC News that the bottles are reference wines used to assess how wines change over time across different vineyard properties, but he added that they are worth \"several hundred dollars a bottle.\"

A few more. pic.twitter.com/W4eiE6GoPi

— David Duncan (@DavidSilverOak) August 24, 2014

Silver Oak also sustained damage to its water main, Duncan said.

Other Napa wineries that were damaged by the earthquake included Mathiassons Wine and the Hess Collection.

\"Goodbye chimney,\" Mathiassons Wine wrote on its Instagram page with the hashtag \"napaearthquake.\"

It is still unclear how much wine Mathiassons lost in the earthquake, according to its Twitter page.

The Hess Collection is still assessing the damage it sustained this morning.

\"We do have some damage ... will need to wait on Mother Nature to turn on a bit more light to fully grasp the extent of our damage ... updates to come,\" the company wrote on its Facebook page.

The earthquake's total impact on wineries in Napa Valley remains to be seen.

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