How Do You Tell The Difference.....?

Difference between circulation coins (A.K.A. >business strikes) and proof like coin? Ever look into a mirror and see the relection. It's glows silvery and impecably clean, well that's proof like and uncirculated pieces have more of a cloudy deep silvery look to them.
Only practice seeing both the finishes on a regular basis will you eventually get used to telling them apart. If you have mint sets and acquire silver coins from rolls of the same year, then easy comparisons can be made. I learned simply by logging onto E-bay and studying the patterns of scans I found of various finishes in auctions.
Within a very short period of time I was able to distinguish between proofs, proof likes, specimen, circulated & uncirculated coins. Try it some time, you'll get the knack in no time!