Vintage Royal Doulton "Mad Hatter" large Toby Mug (D6598).  

It was designed by Max Henk and was manufactured by Royal Doulton from 1964 through 1983. 

Mug is in excellent used condition without cracks, chips, repairs, etc.  

Please review the attached pictures for full details and let me know if you'd like to see more.  

All questions are encouraged and welcome.

Dimensions are about 6 1/4" X 5 1/4" X 7 1/2" (H)