Just found out i have a first edition Sinclair Programs magazine. A search suggests it was worth around £8 on ebay in 2013. The other two are Sinclair Programs no 3 and Sinclair User no 10. Some of these magazine came with cover tapes but not the early ones. These particular ones are full of basic programs for programming various Sinclair computers. The computers were made by Clive Sinclair, also famous for the Sinclair C5 and Sinclair calculators. My first computer was a Spectrum +2, gosh i feel old now.