Old German state stamps, particularly those from Oldenburg and Saxony, hold significant historical and philatelic value. These early stamps, issued in the mid-19th century, reflect the political landscape of pre-unification Germany, when numerous independent states existed, each issuing their own postage stamps.

One of the most renowned stamps from Oldenburg is the *Drei Kreuzer* red stamp, first issued in 1859. Oldenburg was a small state in northern Germany, and its stamps are now rare and highly sought after by collectors. The *Drei Kreuzer* red was part of Oldenburg's first series of definitive stamps, which used the local currency of Kreuzer. It features a simple, yet elegant design, with the denomination prominently displayed, surrounded by a classical frame. Due to its limited print run and the relatively small population of Oldenburg at the time, these stamps are considered rare, making them incredibly valuable on the philatelic market today.

In Saxony, another German state, two important stamps also stand out: the 3 Pfennig green and the ½ *Neu Groschen* orange. The 3 Pfennig green stamp, issued in 1850, is one of the earliest Saxon stamps and was used primarily for local mail. It showcases the state’s coat of arms, which gives it a distinct character. The design is minimalist but immediately recognizable among early German states' issues. The Saxon 3 Pfennig green is considered rare and prized by collectors due to its age, limited availability, and connection to one of Germany’s historic states.

The ½ *Neu Groschen* orange, first issued in 1851, is another key Saxon stamp. It was primarily used for lower denomination postal rates and features a similar design to the 3 Pfennig green, but in a striking orange color. The rarity and historical significance of this stamp have made it a cornerstone for any serious collection of German states' stamps.

Together, these stamps from Oldenburg and Saxony represent a fascinating era of postal history, offering a glimpse into the complex political and postal systems of pre-unification Germany. Collectors highly value them not only for their rarity but also for their historical context, representing some of the earliest examples of German postal history.