Most antiques wear their age well, even proudly.
Don't bank on it. What you learned in Economics 101 about supply and demand is as applicable to objects as it is to stocks and bonds. There are fewer antiques than collectibles. Go for the long term. By the late 1870s and 1880s, an entire set of living room, dining room, or bedroom furniture could be made in less time than it had taken an eighteenth-century craftsman to make just one piece of furniture by hand.