Cobalt blue marks Porzellanfabrik H. Schmidt, cobalt blue mark, Gozdnica (Freiwaldau), Poland (Germany) Krister Porzellan Manufaktur (KPM) cobalt mark, Waldenburg Germany (Poland) 1855 – 1899 Egersunds Fayancefabrik mark, Egersund, Norway. 1873 – 1876 C. Tielsch and Company (T.P.M.) cobalt mark, Waldenburg – Altwasser, Germany (Poland). 1860 – 1870. Porzellanfabrik August Rappsilber (A.R.), cobalt mark, Konigszelt (Jaworzyna Slaska), Germany (Poland). 1877 – 1886. C. Tielsch and Company (TPM) cobalt mark, Waldenburg – Altwasser, Germany (Poland). 1850 – 1860. C. Tielsch and Company (C.T.) cobalt mark, Waldenburg – Altwasser, Germany (Poland). 1870 – 1900. Porsgrunds Porselænsfabrik mark, Porsgrund, Norway, year 1887 – 1911
