This beautiful advent calendar was manufactured in Germany by the Richard Sellmer Verlag Company. . This new paper calendar is about 21cm by 30cm . The detailed picture has 24 little doors to open. Each door has a little picture behind it.ÃÂ . The tradition is to open one door each day from December 1 thru December 24. Children love to open a door a day as they count down to Christmas.ÃÂ . This calendar has glitterÃÂ . The tradition of the advent calendar dates back to 4700cm the Protestant parts of Germany. . The first advent calendar with little doors was printed in the early 1900's and continues today..