Issued during the wartime period, this badge carries the inscription ‘Het Hartvuur Heilig – Het Haardvuur Veilig’, a phrase symbolizing traditional values, family unity, and domestic responsibility under the ideology of the Nationaal-Socialistische Vrouwenorganisatie (NSVO).  
 
The NSVO (National Socialist Women’s Organization in the Netherlands) was an auxiliary group aligned with the NSB, promoting ideals centered around home, family, and the role of women in society during World War II. This badge was likely worn by members as a symbol of commitment to these principles, making it a historically significant piece from a complex and controversial era.