It is an online business, no way any physical can be successful...
There've been plenty of successful physical coins, successful in the sense that they were popular. They certainly don't seem to be a good way to make money for the person actually making them and a whole world of ball ache seems to come along with it.
There was a user here named Gravitate who made the Microsoul coins. He went a bit batty after the constant sniping from users and failures on his part. After doing it for several years I seem to remember him saying his profit was about $5000 in total.
5000 for years of work.. hm, lets think of a better way to make money
What about a coin with physical assets behind?
what the point of having one from you would be?
physical assets as in you provide cover for the coin? it won't work
the only way is if you make them similar to caucasian but again the same questions mentioned above will arise
for your coin to be a success you would have to come with an original idea,make it easily shippable and a store of value or a souvenir