The three GBD canadian pipes in the wooden fitted case have the same shape. They sport the same 263 shape number.
Notice the slightly different bowl heights.
In order to have an idea about when this case was marketed, the following dates could be helpfull : The Premier and Midnight lines were introduced in 1980, The LondonMade in 1978. The metal rondelles having been discontinued shortly after 1981, the case dating could be rather accurate.
Other cased three pipes sets: