One never knows where the old or unusual coins will show up. I applaud you on having the sharp eye and checking it out. Should you ever take the plunge and pick up a box or bag, you may contract the disease called coin roll hunting.
Just a few things to note if you do go that direction. With every denomination there are similar things to look for. Should you continue to browse here or other sites you will learn what to look for in short order. With nickels I look for old (1959 and earlier for me. Others have cutoff dates that suit them better), errors, similar size coins from other countries, tokens, and a host of other things.
Whatever direction you take to increase your personal collection and your stash of trading material is up to you. Most of the keepers I find are for trading with others. Just because I do not want a coin for myself does not mean someone else does not. There is a market for everything.