This is a great Zodiac Leo Dunoon Scottish Stone wear Coffee Mug. It is slightly tall and skinny compared to a regular short and fat coffee mug, it's nice. It has the maker's mark and a number "11" on the bottom. It is Stone wear made in Scotland in the 1990's. There is some fading from the previous owner holding it to use, but the majority of the designs shows through and looks good.
I hand washed it, there is coffee stain in bottom but that's typical.