Arvind Sinha (b May 14, 1955) of Mumbai has been collecting lapel pins since 1998 and has 53,228 lapel pins as on March 31, 2015. A member of Lions Club in Andheri, he gets lapel pins from friends and family and during his foreign jaunts. He exhibits his collection to create awareness on history through lapel pins. The World Wars, development of guns, aviation history, space programmes – all can be seen through his lapel pins! Arvind has also written articles showing world history through lapel pins.