Can anyone here help me date these bricks? They were used to build the chimneys in my colonial style home as well as the brick facade in front. At the time, the builder indicated that they were antique bricks and that we were lucky they were able to get them. This was back in 1982. While they do look quite old, I really have no clue what century they are from. Could these be 18th century or early 19th, or is there anything about them which indicates a later manufacture date? Any help will be appreciated.