This is a Tag der Arbeit 1933 badge, from the NSBO (Nationalsozialistische Betriebszellenorganisation). It is from even before the regular Tag der Arbeit badges series that started from 1934 onwards till 1939.
NSBO Tag der Arbeit 1933 “Es wird Künftig nur noch einen Adel geben – Adel der Arbeit Adolf Hitler 1933”
A little background:
The first may 1933 was known as national labour day in the time of national socialism. Since 1934, the celebrations of 1 may became the national day of the German people. The Nazi party had declared 1 may a statutory holiday and nationally reinterpreted the previous day of the international working class as a recognition of all workers. From the outset, the celebration of may 1, 1933, was connected with the breaking up of the free trade unions – so, the Union houses were occupied by NSBO, the SA and the SS on 2 May 1933.
This is a badge in great condition, complete with functional needle and with a lot of history behind it. It should belong in every serious Tag der Arbeit collection.