Category:Groningen constant

**Groningen constant**
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Instance of	commemorative coin;
Location	Kingdom of the Netherlands;
Publisher	Royal Dutch Mint;
Creator	Johannes Hinderikus Egenberger; Johan Philip Menger; Johan Philip Matthias Menger;
Point in time	1872;
Authority file
	Q97302265;
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Media in category "Groningen constant"

The following 3 files are in this category, out of 3 total.