The stamps from the former German state of Bavaria, particularly those from 1919, are a captivating focus for collectors due to their historical significance, rarity, and artistic appeal. In 1919, Bavaria was transitioning politically as it declared itself the "Freistaat Bayern" or "Free State of Bavaria" following the abdication of King Ludwig III amidst the fall of the German monarchy. The stamps issued during this period reflect not only the shifting political landscape but also embody the unique heritage of Bavarian philately. 

Among the most sought-after stamps from this era are the "5 Pfennig light green" marked "Freistaat Bayern," the "7½ Pfennig gray-green" and "75 Pfennig light brown" with the "Wolfstaat Bayern" inscription, all of which were issued postfris, or mint condition. The 5 Pfennig light green stamp, marked with "Freistaat Bayern," is a modest yet symbolic issue. Printed in a soft green hue, it captures the initial days of Bavaria’s new republican identity after centuries of monarchy. Its value lies in its excellent preservation, its unique marking that signifies the early Free State, and its embodiment of Bavaria’s hopeful new direction.

The "7½ Pfennig gray-green" and "75 Pfennig light brown" stamps marked "Wolfstaat Bayern" represent a rarer and more peculiar aspect of Bavarian philately. The use of "Wolfstaat" was unconventional, as this term, meaning "Wolf State," was unofficial and has spurred much intrigue among historians and collectors alike. These stamps are especially prized in mint condition for their striking colorations and their enigmatic historical background. The 7½ Pfennig stamp, with its subdued gray-green hue, and the 75 Pfennig light brown stamp both stand out not only for their aesthetic qualities but also as symbols of Bavaria’s brief, complex, and somewhat turbulent transition post-World War I.

The rarity of these stamps in a postfris condition further enhances their value in the philatelic community. While they were officially produced and distributed, only a limited number remain today in pristine form. Collectors highly covet these stamps, as they not only signify an important period in German history but also represent an artistic and cultural snapshot of a Bavaria seeking new identity and independence. The intricate designs, the unique terminologies, and the political context make these Bavarian stamps from 1919 exceptional treasures for philatelists.