This is a Concord, California Valley Oak slimline twist ballpoint pen. It's made with 24K gold plated accents and a black stripe clip. The pen uses a Cross® style refill and is made with a durable twist mechanism which will hold up for years. To replace the refill, pull off top of pen above the center band and twist out the refill. A highly polished lacquer finish was used to protect the wood. These hand made pens and pencils make wonderful gifts and are absolute treasures to own!