SA Centenary in the UK (and the world), 09.08.1965. William Booth / open air cahcet. This cover is postmarked with Relevant London E1 PM. According to FDC dealer Brian Reeves, the cat value is at £375. The Salvation Army was formed at Whitechapel London E1. This CDS is the rarest FDC for this issue by a long way. NB! Reference cover – not in my collection!!