COBALT GERMAN /BAVARIAN "ECHT COBALT" WALDERSHOF VASE

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"echt" cobalt means real cobalt: Cobalt blue is a blue pigment made by sintering cobalt(II) oxide with alumina at 1200 °C. Chemically, cobalt blue pigment is cobalt(II) oxide-aluminium oxide, or cobalt(II) aluminate, CoAl2O4. Cobalt blue is lighter and less intense than the ( iron-cyanide based) pigment Prussian blue.NUMBERED 65; CREST BAVARIA WALDERSHOF COBALT;2.75 DIAMETER; (TOP); 4.5 HIGH;10" CIRCUMFRENCE AT WIDEST POINTNO FLAWS