Third Reich Era Business Postal Cover from J. Freber Rolladenfabrik

This is a vintage commercial mailing envelope (postal cover) from the Third Reich period in Germany. The envelope is made of a standard manila or buff-colored paper and features the printed letterhead of 'J. Freber, Rolladenfabrik' located in Mainz, Germany. In the upper right corner, there is a green 10-pfennig postage stamp featuring the profile of Adolf Hitler, a standard definitive series of the era. The stamp is tied to the cover with a circular date stamp (CDS) postmark, though the specific date is difficult to read. Below the primary stamp is a smaller blue and white label or secondary stamp. The left side of the envelope contains printed business information including the company name, founder (Inh. A. Friedrich), and specialty (Rolladenfabrik, meaning shutter factory). Notably, there is a strike-through line across part of the printed address or telephone line, indicating a correction at the time of use. The condition shows significant yellowing, minor creasing, and typical age-related foxing and tonal variation consistent with paper from the 1930s-1940s. The envelope appears to be postally used, representing a piece of social and commercial history from the mid-20th century.