I am a private collector pursuing my hobby in retirement. My collection comprises QE11 pre decimal cylinder blocks and selected varieties ( I don't buy missing colours unless they come with a certificate - too many fakes). As well as buying single lots to add to or improve my collection I also have to buy bulk lots just to fill the odd space. Hence I can pass on duplicated items or accumulations to like-minded collectors and at affordable prices, well below the catalogue values where listed.