Ceramic pot vase signed C. Greber

Charming muddy sandstone vase in brown colors, gray pulling on green and blue, with under the stamp "c.greber france". It could date from before 1933, when charles greber sold the company to his nephew pierre (who switched to brighter colors). Other ceramics of the same aesthetics and signature are even dated 1910... But I don't have any certainty. On the other hand, what is certain is that it dates from before 1961, the date of definitive closure of the manufacture. Unfortunately, it has two splinters, one of which is important on the high edge, but fortunately they are located on the same side, so you can use it as a decoration, by placing the vase, damaged side not visible... Everything is good to save this little ancient treasure! It measures 12 cm in height, 15 cm in larger diameter (at the level of the rumn) and weighs 650g.