Quote:
DOC notes can have a lot of value and are relatively rare. These look to be about F/VF on the $2 to vf/XF on the 25 cents so they may merit grading but I don't know the grade/value of these notes. @walk2water is an expert on Canada notes and he should be able to answer your question.
-Thanks @hfjacinto but not sure about being an 'expert'

Here's my best guess, from the images:
1900 DC-15b Boville 25 Cent:
The edges look suspicious. They're dark & uneven plus the note has two pinholes (or staple holes) on top right. Lots of little spots, stains, etc make this note look like an 'apparent' VF to me. The note loses EPQ (original) designation due to the holes.
1923 DC-25o Campbell-Clark $1.00 E prefix:
There's several regions on this note which appear to have stains which were removed (diminished). On the front lower right border (next to the 1 Marker) there's a dark enough stain to see easily, on the reverse about 3 diminished stains on the top border. All these point to a washed note. Plus the note looks pressed. The design looks pretty good considering the fact that it looks so processed so perhaps Fine 18 or Apparent VF20?
1923 DC-26i Campbell-Sellar $2.00 Group 2 Blue Seal:
This note looks like it had worse stains than the $1.00 & less successful washing (especially on the reverse). Take a close look at the blue seal & you will see areas where the design looks diminished/worn. Take a look at the flattened folds that have clearly been pressed (horizontal across the face/front). This was a "Fine" with edge nicks, stains, soiling. Not sure what # (grade) they'd award this note but its definitely been processed.
As @hfjacinto stated, they're all tough notes (except perhaps the black seal) but they had issues/problems which were later doctored (except perhaps the 25 cent).