There was the time in which the guru for investments in silver bullion was suggesting silver instead of gold, then silver will for sure keep the value on long term because it is requested every year more in various industries, then was said that also the mining of silver is decreasing, but finally after 10 years the price of investment silver is practically the same, no return and only problem to keep at home or fees to pay to put in vault.
Actually after the last negative developments I have to say that I am giving up, because Silver is really not a good investment anymore. Maybe investing in silver mint/coins could be more profitable, but silver as silver is not good for me at all and really disappointed about this, but that´s life.