Impressed marks C. Tielsch and Company (C.T.) impressed mark, Waldenburg – Altwasser, Germany (Poland). 1870 – 1900 Egersunds Fayancefabrik mark, Egersund, Norway. 1877 – circa 1880 Egersunds Fayancefabrik mark, Egersund, Norway. 1883 – 1920
