It’s 1977 and I’m driving up the Gloucester Road in Bristol to Radford Hi-Fi, my intention is to buy a Quad FM3 tuner for my burgeoning Hi-Fi. I can’t park near the shop so I have to travel further up and find myself parking outside a tempting junk shop. This glass stands out from the others surrounding it because it’s green. Today glass with a green tint is recycled and I thought that this was a recycled glass. Chris Harrison emailed me to tell me that there was NO recycling during WWII and the green colour is as a result of iron impurities. Chris suggests that Manganese Oxide was in short supply and not used to purify the mix.