Don't really know specifics of the Port other than Cab's aren't uncommon in the central region. Most I believe may be west of Hwy 101 where ocean pathways for cooling may exit. I noted the vintners notes from 2003 where they noted warm period over 100F days then in 90s for a period but indicated they spent a lot of time with cutting laterals and other cuttings to open up air flow, etc. Things I really know little about other than dead moist air is not generally good due to fungus risks.That's a lot of age on the bottle, too. Nice. I am not sure the climate of Paso Robles is ideal for Cab. Perhpas too warm? I have been luckier with Rhone blends from there.
This one is intriguing, though. Perphaps a late harvest production?
The vintage noted keeping into 2015 if one wished, this from around 5 yrs back. I found it really quite nice, but it is sweet however being a Port I don't really mind it as my father used to make wine when I was young, but his skills were just as a layman. However most his were somewhat Portish in taste.