C. Tielsch and Company (C.T.) koboltblå stempel, Waldenburg – Altwasser, Tyskland (Polen). 1870 – 1900.

Manufaktur: C. Tielsch & CompanyBy: Waldenburg – Altwasser (Wałbrzych – Stary Zdrój)Land: Germany (Poland)Period: 1870 -1900 Objekter med dette stempelet: