@Almita - I'm not sure how to recognize bronze candlesticks, but I know about brass ones. The first thing I look for on a supposedly antique candlestick holder is a seam up the stem. Old candle holders were made by melding two halves together. If there is a seam, it's likely an antique.
I'm sure you can tell the difference in the polish on bronze as much as brass – I'm just not sure on the particulars. If you really want to make sure, take it to an antique dealer. They can identify fakes easily.