Paper money collecting as my new hobby

Assalamualaikum,

Starting last year, i start to collect paper money from Malaysia and outside. Before this i dont think this is a good o can be a great hobby for me because i also have some paper money in my wallet from 80' that i got from my friend. i don't exactly know the date when i start to luv this hobby. No wonder, this is a very challenging hobby and cost me a lot of money and time to find such as a note of paper. Just try it.! 

Banknote collecting, or Notaphily, is a slowly growing area of numismatics. Although generally not as widespread as coin and stamp collecting, the hobby is slowly expanding. Prior to the 1990s, currency collecting was a relatively small adjunct to coin collecting, but the practice of currency auctions, combined with larger public awareness of paper money have caused a little interest and values of rare banknotes.

Sanjay Relan, of Hong Kong is holding the Guinness world record since 2007 for collecting 221 banknotes representing 221 different countries. He also held the Guinness world record in 2007 for a short period for collecting 235 coins representing 235 different countries.

For years, the mode of collecting banknotes was through a handful of mail order dealers who issued price lists and catalogs. In the early 1990s, it became more common for rare notes to be sold at various coin and currency shows via auction. The illustrated catalogs and "event nature" of the auction practice seemed to fuel a sharp rise in overall awareness of paper money in the numismatic community. Entire advanced collections are often sold at one time, and to this day single auctions can generate millions in gross sales. Today, eBayhas surpassed auctions in terms of highest volume of sales of banknotes although the risk of counterfeit is extremely high. However, rare banknotes still sell for much less than comparable rare coins. This disparity is diminishing as paper money prices continue to rise. Many rare and historical banknotes have sold for more than a million dollars.

There are many different organizations and societies around the world for the hobby, including the International Bank Note Society (IBNS) which currently assert to have around 2,000 members in 90 countries.