Symbol 5050 from IEC 60417 - Title/Meaning: Colour television Function/description: To identify the controls and terminals specifically meant for colour video signals.
Additional information: 
If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green (right)
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/483e95ce-8aab-4daa-8590-d3777728df2d 200.png
Vectorization:  Mrmw