Trying to date a brass candlestick can indeed be a challenge.
Less opulent than its aristocratic cousins gold and silver, and a step above the more common iron and steel relatives, brass (an alloy of copper and zinc) was the ideal alloy of choice for crafting items for the middle class.
Also look at the way the grain of the bottom board runs, if it is from front to back the chest is probably of early 18th Century construction, the grain running from side to side suggests a manufacture of post 1750.
The next thing to consider is whether the chest's handles are original.
When studying a chest of drawers it is important to be ordered in your thought processes.
In the 1600's to the 1800's, courting candles were used by the man of the home to set boundaries for his daughter.
When the daughter's suitor came calling, the father lit the candle in a sitting room where the couple conversed.
These lost favor because in times of strife the large church candlesticks with prickets became formidable weapons, so the socket was mandated.
A candlestick's shape is often a good indicator of its age.