![BBC Archive on Twitter: "Test Card F (the best test card) turned 50 this week. Here's all you could possibly wish to know, courtesy of @BBCRD https://t.co/EFsQSuL1Ma https://t.co/fJyeiuD8kH" / Twitter BBC Archive on Twitter: "Test Card F (the best test card) turned 50 this week. Here's all you could possibly wish to know, courtesy of @BBCRD https://t.co/EFsQSuL1Ma https://t.co/fJyeiuD8kH" / Twitter](https://pbs.twimg.com/media/DDzqRakWAAIEv0z.jpg)
BBC Archive on Twitter: "Test Card F (the best test card) turned 50 this week. Here's all you could possibly wish to know, courtesy of @BBCRD https://t.co/EFsQSuL1Ma https://t.co/fJyeiuD8kH" / Twitter
![The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture](https://images.prismic.io/six-things/e03be897-d9fb-484c-85e4-99da091df1d9_Testcard.jpg?auto=compress,format&rect=0,0,900,900&w=900&h=900)
The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture
![The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture](https://images.prismic.io/six-things/e03be897-d9fb-484c-85e4-99da091df1d9_Testcard.jpg?auto=compress,format&rect=0,0,900,900&w=700&h=700)
The BBC Testcard F - icon of TV history - Image - Bite Sized Britain - Britain's amazing history and culture
![Then and Now Photos of Carole Hersee, the Test Card Girl on BBC Television for 30 Years ~ Vintage Everyday Then and Now Photos of Carole Hersee, the Test Card Girl on BBC Television for 30 Years ~ Vintage Everyday](https://1.bp.blogspot.com/-RLkBpFWtYQo/XRT4J-5VB8I/AAAAAAADjls/08qXoC-HxHEaWBtI23Y2yjgYHQW0RNuagCLcBGAs/s1600/test-card-girl-carole-hersee-2.jpg)