For our bookish calendars we are applying following refinements, which distinct our calendars from others designs:
•  cut registers,
•  rounded corners of the cover and the block,
•  individually printed ribbon for marking of pages,
•  corners' perforation,
•  arbitrary projects of end-paper inside the cover, ie. map of Poland,
•  pocket for business cards,
•  stitching around the cover,
•  sewn through covers, combined from different materials,
•  pressings in leather (thermal-discoloration, gilding, silvering and others).