Is there anybody here who can explain what those chalk numbers above the door mean?
We saw them everywhere - particularly in the Alsace region - and were told they were dates, but I cannot make them out
google tells me that C+M+B stands for "Christus Mansionem Benedicat" Christ Blesses this House.
the numbers are supposed to form the year: 2019 in this case.
Normally it's the children that go from door to door on January 6th - the day of the "three kings" (the 12th day).
The children ring and sing a number or songs and they get some small change from the people.
That part is even know here in Belgium. The writing of the blessing isn't or not anymore. The markings were supposed to stay until Pentecost. Stayed until the following year sometimes.
It is also mentioned that the initials of the "three kings" are also C, M and B: Caspar, Melchior & Balthasar.
The articles I read mention this to occur in Austria and in South Tyrol which is originally Austria as well of course.
I would add the links but the articles are in Dutch.
20+C+M+B+20 (betekenis van deze markering in Oostenrijk) (wintersport.be) and
Waar komt het C+M+B in krijt boven de deur in de Alpen vandaan? (thehike.nl)
Not an issue perhaps?