Belgian territory, surrounded by Dutch territory, and therefore inaccessible for the German occupiers,while Netherland stayed neutral in the war.
POSTMARK: one circle, crosssection 27,5 mm.
Two types:
1) The under side of the word BAARLE is defected. The two A's are missing the under part of the second leg. The character L becomes almost an I, the character E is an F. The year is shifted to the left.
2) The characters of BAARLE are well formed. The year is placed right beneath it.