from coins back to bc to bank notes stamps and copper artefacts these were the collectibles for at the three day national numismatic exhibition the event which started on friday saw more than 200 visitors admiring the tokens of history and picking up coins and stamps of their choice mohammed rafiq a stationery shop owner and lover of old coins who travelled the way from kerala said i eagerly wait the exhibition every year this is my one stop for picking up treasures he has been the exhibition for over 20 years for gururajan r collecting coins is new hobby this is my second year i a lot more to learn i am planning to buy some antique coins he said other than coins and stamps the wooden charkha used by mahatma was an added for though it was not sale there were hand written letters by gandhi to son and the official notification issued dandi march in was one of the exhibits