My advise is never clean your coins if you can avoid it, in case there  is no option but to clean your coins, heres what I do.   

I have 4 steps, the first is buffing them with a soft buffing cloth or a  terry bath towel / napkin   

If the coin still needs cleaning, then soaking in a soapy solution of  detergent and water. About 12 hours   

If you still need to clean it more, then soak in  a solution of lemon  juice and water. but make sure you wash it completely clean after.    

For the absolutely war like situation when a coin just wont get clean,  soak for 2-3 hrs in a solution of water with household bleach. BE  CAREFUL. It is highly corrosive   99% of the coins will get clean   

In my opinion , Do not use toothpaste since they tend to have a high  hardness on MohS scale and may scratch your coins. Dont use cola either  again highly anti coin friendly

All the best, keep safe

In this part I will speak of investing in precious metals like gold,  silver, platinum and palladium   

Silver is my favorite since every electric car uses 20 gms and the world  production of electric cars is on the rise. 

Theres also a lot of fun  that can be had from it.    I have added silver tokens also referred to as silver coins such as  Mickey Mouse, Guru Nanak, Radha Krishna at a very reasonable price since  silver is at a very reasonable price   

Indians always love gold , so that will go up too but not that much,  Platinum despite having uses in a lot of electronics has had a drop in  prices due to its major use being in Catalytic Convertors for normal  cars   Palladium unfortunately is not available in India easily, if you know  where to get some, please leave it in the comments section below

In Part 1 I spoke of how to make money by being aware of the currency passing your hands   

https://www.youtube.com/watch?v=PmrNrsbfniE&t=8s   and    

In Part 2 I spoke of  investing in buying un-circulated coins and proof sets   https://www.youtube.com/watch?v=EetAX9Lq0lM&t=13s   

This episode like the others is based on my experience and I am not an expert nor do I profess to know the future. I just hope I have helped you make money

In episode 1 we spoke about making money from coins in general circulation. In this one we talk about how to make money from uncirculated and proof sets. 

What are proof sets and uncirculated sets , we will talk about in this episode

Some people claim that coins and tokens commonly reffered to as Ram Durba coins which are being sold in the market are genuine and worth Crores. Listen to this episode to know more about them and their genuineness

TheCurioShop.in has been setup with the aim of providing the listeners a true idea of what they have in their collections of stamps coins banknotes and other curios , listeners are free to send questions and images of things they would like an opinion on