1983:Unicorn and Pegasus Ponies
SUNBEAM
Pale blue unicorn withwhite hair (yellow streak in mane) and glittering gold sun symbol
Sunbeam was only ever sold as a part of this set, and only in North America. Europe is still unconfirmed for the Hong Kong edition, but I know she was never sold in the UK.
Whilst all the other ponies from the set had some magical or special properties, Sunbeam's chief characteristic seemed to be the ability to throw a good birthday party - as often as possible!