less standardize now now catalogue are available which make it easy for a collector to identify segregate and evaluate his collection this besides assistant in bring in a kind of standardization in the prices that say the rare and extremely rare mint and currentness are calm trade based on demand add manikandan mukesh kumar verma of delhi has more than 50000 coin in his collection and he serve about all the exhibition related to coin and stamp it aid him interact betray and acquire coin and artifact he say however it s the care of these ancient currentness that pose a challenge for many specially for those who are new to the hobbynatarajan say if you assume the pallava menstruation coin they are coat with pot alloy it will not resist extreme temperature they are very brittle if it drop down it will dislocation into particles so how do they maintain these rare solicitation as a thumb rule the coin should be keep in cotton preferably in a case if there are cancel on the surface it will decrease the respect of the coin while calciumoxide juice and softbristled brush can be exploited to clean copper coin give a coat of olive oil help to keepopen their glow entire say manikandan currency note are much store in specially made plastic envelope lakshman suppose we use spell envelope to observe the note it s important not to have any flock in the note there won t be any taker for decay note while handling previous note you should control them only in the inbetween and not on the edge since they may disintegrate the member of the chennai coin society who lead the exhibition are wellbeing that the avocation of currency and revenuestamp collection are on a brace rise we mastermind monthly meet to create awareness on numismatics and educate newcomer collector on the finer aspect of coin collection and its sustenance read manikandan did you know the givevoice numismatics is deduce from the latin word numisma which entail mint it is mention to as the avocation of king thanks to the nobility that begin the avocation collector of coin admit pope host eight emperor maximilian of the holy roman empire louis fourteen of france ferdinand i elector joachim two of brandenburg who start the berlin coin cabinet and henry intravenousfeeding of france to name a few