Currently I have a number of spare new plain Ground glass focus screens:

5"x4" for Crown/Speed Graphics, also Super Graphics, Shen Hoa 10 each + package & postage at cost

10"x8" Toyo/Cambo and Agfa Ansco 25 each + + package & postage at cost

There's also an assortment of odd sizes from 1/4 plate, 9x12cm, half plate etc.

Ian