Dutch Blue & White Royal Delft Space Plate - Sputnik First Earth Satellite Launched - 1957

The tin glazed earthenware plate decorated in shades of blue with a satellite above the earth between the moon and stars and the text:
DE EERSTE AARDSATELLIET GELANCEERD - 4 OKTOBER 1957 (First earth satellite launched.)
The rim with stylized flowers and leaves.
Signed on the back in underglaze blue for:
DE PORCELEYNE FLES - ROYAL DELFT
DELFT - HOLLAND  &  CB = 1957
Painter’s initials: Po =   J.H. Post
Employment dates: 1950 - 1983   
Literature:
This plate is not shown in Rick Erickson - Royal Delft. Only listed on Page 130 in Commemorative Plates.

Diam.:  18,6 cm.  (7,3 inches.)
Weight: 235 grams.