Dating CSC's chestnut handled knives is tricky because CSC generally used chestnut on open runs -- meaning they used it on a pattern for a number of years rather than as a one time deal. Your best bet might be to watch ebay or like sites closely to see if a folding hunter with a serial # close to yours comes up with the original paperwork.
A quick ebay search of present and past auctions turned up two CSC folding hunters in ram's horn made in 2009, one in black buffalo horn made in 2010, and one in abalone made in 2011. There were a handful of others, but if they came with the paperwork noting the date, it wasn't pictured.
Given the low number on your knife, and the fact that chestnut was one of the first materials CSC applied to almost every one of their patterns, my guess would be you're looking at a 2009-ish date for your knife.