Zeiss Microscope Filter Slider 1062-259 with Neutral Density Filters

Item has some cosmetic wear from prior use.
Contains 2 filters that are in good condition.
I do not know what ND filters they are. 
Slider is 14 x 40 mm for 25mm filters

For use with the following models:
Axio Observer.A1
Axio Observer.D1
Axio Observer.Z1
Axiovert 200
Axiovert 200 M
Axiovert 200 M MAT
Axiovert 200 MAT
Axio Observer 3 materials
Axio Observer 5 materials
Axio Observer 7 materials
Axio Observer 3
Axio Observer 5
Axio Observer 7