Andrew Butler has been a collector of British Stamps for almost 50 years. Having always had a passion for the subject as a young boy I decided to collect British Stamps as they were easier to obtain. Having used the "Collect British Stamps Catalogue for many years, It was in 2010 that I realised just how many I was missing when I purchased my first concise catalogue. But then I fell in love with Wildings and this period of British Stamps simply because from a basic 17 images there are literally thousands of varieties detailed in the Pre-Decimal Vol III Specialist Catalogue, which make the subject so fascinating. I want to pass some of my experience onto other collectors by sharing some of my stock of Wilding Specialist Stamps and source materials with you. The Green phosphor Inverted SB86a for example only found in one booklet of which only 39,600 were produced. With 50% of these being inverted. Knowing that they were guillotined, finding a pane with good perforations on all sides makes this pane one of the most sought after amongst collectors.