h 3259 px

No mark.
    
fem49    Netherlands, Mignon, 1915 [military post]
h 3136 px

GG Co (Georg Gerlach, Berlin), 2007/5.
    
fem50    Netherlands, 1915 [no stamp]

h 3187 px

Bleuet, Paris, 458.
      
fem51    Belgium, 1926
h 3189 px

P.C. Paris, 1782.
    
fem52    Belgium, 1926

   
h 3212 px

A. Noyer, Paris, 3198.
    
fem53    Belgium, 1923
h 3186 px

HH (Heliophot, Berlin), 9621/3.
    
fem54    Germany, 1927