I was at the grocery store yesterday and paid the cashier $10 in halves and he asked me if any of them were silver (like I would knowingly hand someone silver at face haha).
I asked him if he finds them often and he said from time to time; I asked him if he sells but he said he was a collector and just holds onto them.
Then at a bank, I got some halves from the teller and she sensed I was asking for them to look for silver. She then told me that she always has better luck finding silver dimes than halves.