I don`t think that is a makers mark !! Its a mid century design,, my mother had a saucer with same design for a wall hanger, !! Hers didn`t have a mark,, never looked for a T !! Makers marks are not normally done in that manner since it doesn`t tell anything important !! A mfr would want everyone to know that it was made by them and would clearly have a stamp or impressed mark or label !! This probably came from a set and may have had a stick on label !! It is not an expensive piece !!