Cobalt Net Teacup and Saucer, USSR era. Cobalt net is the trademark style of the Lomonosov Porcelain Factory, which first appeared in 1949. The pattern is a combination of hand painted intersecting lines, or netting, of cobalt blue with inverted tear drops of cobalt blue (made from mineral cobalt) and 22 karat gold accents. 2¾" high, 5¾" diameter. (Not a Chinese knock-off (of which there are many on the web.) Burgundy Lomonosov "Made in USSR" factory mark. 1 only.