The Hong Kong pattern with the words "improved stone" refers to the stoneware from which it was made. The pattern was made by the Staffordshire Pottery of Charles Meigh which was in business between 1835 - 1849 or Charles Meigh and Sons from 1851 - 1861. Both feature the 'improved stone" on the bottom. The pattern features a Chinese inspired landscape with two buildings and a bridge, as well as an island with a willow tree on the top left.
The pattern is offered on several online sites with prices between $20.00 to $80.00 depending on condition. Lower-priced items show some chips, cracks, or crazing.