Investing in Silver Bullion?

Suppose I wanted to invest in silver bullion, partially as a serious investment, partially for the novelty of having some “portable property”.

Suppose I went to a coin dealer and bought several silver 1oz pieces, or a large bar, would I be able to sell them later without excess testing and fees? Assuming that I took and kept possession of the bar(s) to avoid storage fees.

What I mean is when I go to sell the bars (back to a dealer) will the process be: “Your bars have the right mass, here is your money”. Or will it be more convoluted?

I’ve heard stories about a person who took his bars in, and had to pay for the dealer to drill holes in bars to ensure that the bar hadn’t been hollowed out and filled with a cheaper metal.

What is a typical pathway from purchase to sale of a bar of silver?