1920 DAP or NSDAP envelope

[SilverATheart]

I need help translating what is written. I just bought this on the slim chance it is actually real. The fact this is dated 1920 and has those odd swastika stickers on it could make it very rare. If it is real there is a good chance the sender or recipient could be a historically significant person considering the party definitely had less than 200 members at the time. I have reached out to several experts with no response at all. I don't know if this is a good or bad sign. Any comments on its authenticity is much appreciated as well. Thanks to everyone in advance.

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I don't know how to upload the picture of the envelope.

[Adrian]

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[SilverATheart]

[Willmore]

Hi there.

I would read the writing as Herrn Heinrich Bauck - Solingen Handelskammer (Solingen Chamber of Commerce).

Kind regards,

Will.

[SilverATheart]

You wouldn't have any suggestions/tips on how to find out if he was a party member would you? I only ask because unfortunately for me there is the slightest chance those are Finnish air force swastikas and not representing the NSDAP. I am hoping to authenticate this piece as an extremely early piece of party mail.