I found lots of inspiration for this weeks Sunday Stamps theme of yellow in my stamp collection, but eventually decided on this one. It's a yellow 4d stamp, showing the Jodrell Bank telescope, and was issued in September 1966.
4d Jodrell Bank
The stamp was issued in a set of four stamps commemorating British Technology. I only have two of the set, and if you'll all forgive me straying off theme slightly, I also wanted to share the second stamp in the set, which is an orange 6d stamp showing various British cars, including probably my favourite car of all time, the e-type Jaguar, as driven by Mrs Peel in the Avengers. The other two stamps in the series were a 1s 3d Hovercraft stamp, and a 1s 6d Nuclear Power stamp. Incidentally, the 6d cars stamp is featured in Simon Garfield's book The Error World: An Affair With Stamps where he writes about a rare, errored, version of the stamp which only included the e-type jaguar and not the three minis.
6d e-type Jaguar and 3 Minis