Not just any T65 TDK, but an early version of it, made by NSEM in 1977.
It is not discolored and the casing is in good condition. Not too many scratches. It has never been refurbished. So totally factory original.
It has an early version dialpad. It has grey keys, instead of black and it has some more complicated electronics on the underside. It is open, instead of the smaller closed box of the later pads.
And, this phone being an early touch tone version, it has grey cords instead of black ones and cream transmitter and receiver caps, instead of grey like the casing.