| 
 Portretten / Portraits 
  | 
| 
 the traditional version: 
 
 The unscreened version: 
 
  | 
| 
 The 1917 Próceres - Statesmen series seems to have been printed in screenless photogravure. Some values resemble traditional recess a bit more like the 4c but about most others I have no doubt! 
 Apart from the technical aspects look at the ornamentals!  | 
|  At least 2 values seem to have had both
engraved [steel-engraving?] and etched [copper-etching?] plates:
 5c Maclovio Herrera: 
  | 
| 
 10c Francisco Madero: 
 the 5c has a completely different design and there is no name mentioned!  |