When we look at the following parts of forged and real sheets we 
 can make some remarkable comments.
   
 1) The topmost sheet part concerns a dangerous falsification type 2
 of the 5 c ( brillant gum, cream-coloured paper, yellow-green tinge, 
 bright red cross, unperforated).
 The lower sheetpart is a part of a genuin sheet.
 When we compaire the stamps, especially concerning the red crosses , 
 we can make the following  remarques :  
 (the numbering we use is as follows : A B C D E F
                                       1 1 1 1 1 1
                                       2 2 2 2 2 2
                                       3 3 3 3 3 3 

 - False stamp B 1 : two red dots on the forehead of the king , 
                     with a red flaw to the edge.
   Genuine stamp B 1 : exactly the same .

 - False stamp A 2 : red cross shifted to the top 
   Genuine stamp A 2 : identical

 - False stamp C 1 : vertical arm of the red cross pushed in
                     at the top.
   Genuine stamp C 1 : the same

 - False stamp F 3 : red dot under the second E of BELGIQUE 
                     and above the L in the frame.
   Genuine stamp F 3 : the same

2) The upper piece represents a dangerous forgery type 2, the lower 
piece is a part of a genuine sheet.
We use the following numbering : A B C D E
                                 1 1 1 1 1
                                 2 2 2 2 2
                                 3 3 3 3 3

- Forgery stamp A 2 : left horizontal arm of the cross deformed.
  Real stamp A 2 : identical.
  
- Forgery stamp A 3 : red dot on BE of BELGIË.
  Real stamp A 3 : the same.

- Forgery stamp B 1 : red dot on second E of BELGIË.
  Real stamp B 1 : idem.

- Forgery stamps E 1-E3 : red dot between the two stamps 
                          in the margin.
  Real stamps E2 E 3 : identical.

- BUT : Forgery stamp C 3 : red cross NOT shifted to the top .
  Real stamp C 3 : red cross shifted to the top. 

3) The upper piece again shows a dangerous forgery type 2, 
the lower a part of a genuine sheet.
We use the following numbering : A B C D E F
                                 1 1 1 1 1 1
                                 2 2 2 2 2 2
- Forgery stamp E 1 : . red line in the decoration above the B of BELGIQUE.
                                         . red dot on second E of BELGIQUE.
  Real stamp E 1 : the same.

- Remarquable also that stamp D 2 of type 2  (stamp nr 145 in the upper 
part of the sheet) corresponds with stamp D 2 of the false sheet.
 

4) Finally we show a scan of a great part of a sheet of the dangerous 
forgery type2.

We use the following numbering : 

A B C D E F 
1 1 1 1 1 1 
2 2 2 2 2 2 H
3 3 3 3 3 3 1
        4 4 2 
        5 5 3

- Type 1 stamp in position H 2, compared with  the real stamps we can 
find it in position 190 of the upper part of the sheet, here it is in 
position 115.

-Stamp C3 : twisted line besides the red cross, corresponding with 
stamp 95 of the genuine stamps.

-Stamp F 5 : . little red line in the decoration above the B of BELGIQUE.
                                   . red dot on the second E of BELGIQUE.
 These marks are the same as these on stamp 128 of the genuine stamps.

When we make a carefull conclusion of the preceeding remarques, 
we can say that the printing stone used to print the red crosses 
on the genuine 5 c stamps, was also used to place the crosses on 
the dangerous forgery type 2.
To make a definitif conclusion we need more parts of the genuine 
and forgery sheets than we have now.