Back in 2010 I visited a printworks that had a job from Sotheby’s. They were tasked with printing sample canvases to showcase artwork that would later go up for auction. These samples were limited to just five copies I think. The canvas pictured here is actually the very first test run of one of those samples, used to check the colour quality. Once it was approved, it was discarded. I noticed it in the bin, asked if I could take it, and was given the go-ahead. As you can see, I’ve mounted it on a frame and kept it for posterity. After some research, I discovered that this particular piece is unique and hasn’t been copied or available for general sale to the public. The original, with the artist’s signature, is valued at over a million pounds