This rare set was made by the Mah Jongg Company, Ltd. in England. The tiles are a white shiny substance which did not age very well; these have all been cleaned! The colors on some of them have faded, and some color transferred to the backs of other tiles when stored. The carvings are shallow, which explains why so many have lost their color. Most tiles are painted with just one color.
Note the unusual design on the 7 Dot, and the use of black on the 4 and 8 Dots, although we do see black 8 Dots from time to time.
The pheasant standing on the rock is very like others we have seen
The other Bams are rounded, and unique in their slightly squat designs, making this Bam a hallmark of this set. The One Dot is cog-like, and the other Dots circles within circles. The Craks are the simple Wan, with the Wan looking like a runner caught mid-stride.
And for those of you who are not familiar with a wonderful collector, here is a link to Tony Watson's collection. You will see the same set there.