I just read today that the annual red crab 
migration has begun on Christmas Island, so good timing with the postmark.
It happens more than sometimes to me 
I asked this question to a philatelic office and they said me that there’s a procedure they have to do, to request the CMP to manually handle this mail, without putting it into the machines that would cancel it another time.
Basically, they put mail inside one of their envelopes and on the front specify to the responsible that is “philatelic mail” not to be cancelled again.
All the times I’ve received ugly double cancelled mail I’ve asked explainations, and all philatelic offices answered that they had followed the procedure, even if it was the 2nd or 3rd time that it happened.
So, is CMP who doesn’t follow the procedure? 
Sad thing is that no one send me back a substitutive mail correctly cancelled, after I’ve singnaled the problem via official complaint procedure 
That’s too unclear.
I like the ornamental embellishment on the date stamp! 
Nice postmark from Mandapola, feel free to post any others 
Andorra (French Post)
France, Postal service for soldiers abroad
France, postal desks situated in shops, or townhall
France, stamp for philatelic offices (about 315 in the country)
French Antarctic territory
Saint Pierre et Miquelon
