Germany - Opel Factory w/ A. Hitler Portrait 1933

Zach P. Collection. 1 May 1933 "Day of the German Workers" medal. This type is listed in "Medallic Portraits of Adolf Hitler" by R.W. Colbert and William D. Hyder as C-40, however, there it's listed as made in copper. Most coins, medals and tokens of the period are not made of copper, a critical industrial metal at the time. It's described without a photo so it may be an error or it may have been struck in white metal too. Here the medal appears to be about 36 mm in diameter. The description from the reference above is:
C-40; Obverse: Bust of Hitler facing left. The inscription reads, "ADOLF HITLER / DER
FUHRER AUS DER NOT" or "Adolf Hitler, the leader out of the hardship (want)."
Reverse: The Opel factory is portrayed, surrounded by the inscription, "N.S.B.O.
OPELWERKE / 1.MAI.1933 TAG DER DEUTSCHEN ARBEIT ':'" or "Organization of
National Socialist Industrial Cells (Nationalsozialistische Betriebszellenorganisation)
- Opel Factory; May 1, 1933 - Day of the German Worker."
Physical Details: Struck in copper. 30mm
Further Information about US General Motors and Opel:
Hitler knew that the biggest auto and truck manufacturer in Germany was not Daimler or any other German carmaker. The biggest automotive manufacturer in Germany — indeed in all of Europe — was General Motors, which since 1929 had owned and operated the longtime German firm Opel. GM’s Opel, infused with millions in GM cash and assembly-line know-how, produced some 40 percent of the vehicles in Germany and about 65 percent of its exports. Indeed, Opel dominated Germany’s auto industry. Click this: [ link ] for the full article.
Further info on the collaboration of Ford Motors and GM with the Nazis can be found at this: [ link ]
Yet more info, including a photo of the expected copper version at this: [ link ]