Bing and Grondahl Early Seagull Plate 21,3cm from around 1880-1890s

Bing and Grondahl Early Seagull Plate 21,3cm from around 1880-1890s. Nice early plates. Must have been made around or before the Seagull pattern was produced the first time. Marked with the rare "Hoveddepot" mark. There is 7 plates in good condition and then 3 plates with minimal hairline.