I go into my local bank about once a week (on the same day and time) to see if they have any dollar coins (Ike or older) they want to get rid of. They don't like them because they don't have coin slots/holders for them any more. I buy what they have (if any) and the tellers I know will save them up for me since they know when I come in. Believe or not, I've gotten quite a few old silver dollars over the years doing this. Over the years I've found most bank tellers aren't really coin collectors. I wonder if it's because they handle money all day long?
My uncle (actually my father's cousin, but I always called him Uncle Tom) died 10 years ago- at age 85. He left me his "coin collection" - actually just a bunch of coins and currency stuffed in a canvas bag. Turns out this money was collected by his mother, who for decades (both before and after WW II) was a bank teller. Every time she encountered an old coin (or paper currency) she'd buy it from the bank, bring it home and put it in that sack.
I did a full inventory of all of those coins, then cross-checked them to numismatists' coin values. Not many had any special value, and most were so covered with crud (oil, etc.) that it was not possible to determine which mint originally struck them. Still, they had interesting historical value. There were many pre-1900 coins of all denominations (including more than 20 silver dollars) and silver certificate paper money, and much of the coinage was in decent condition. I thought about breaking out a can of Brasso but decided against it. I know - coin collectors would frown at cleaning up these coins. But my purpose in holding them was to be able to examine them - not re-sell them.
Last Christmas my 10-year-old granddaughter visited, and I showed the coins to her. She spent a couple of hours happily examining them, and reading about the various coins' origins - how to determine which mint each coin came from, and which were rarer than others. So, with her dad's (my eldest son's) blessing, I gifted the entire collection to my granddaughter.
The actual currency value was around $150, and the "collector's value" was certainly much greater. But the greatest value was the smile that collection put on my granddaughter's face.
Uncle Tom also left me a Colt 1908 Pocket Hammerless 380 ACP that his father bought new the same year Uncle Tom was born (1923), and gave to Uncle Tom when he enlisted in the Navy in 1941. My eldest son - now a CWO Blackhawk pilot and formerly a 160th SOAR crew chief - now has that Colt.
Throughout WW II Uncle Tom was a tin can sailor - a torpedoman - in the Atlantic theater; my father was also a tin can sailor - fire controlman - in the Pacific. They spun many yarns whenever they got together.