The ground does indeed move. Just ask Rick and Marty Lagina (Curse of Oak Island TV show) about the Canadian toonie that they found a few years later, several feet away from the area they dropped it in.
I've got one of those sample PCGS slabs they gave away back in the 80's. I need to find out where Paddy is detecting next . . . Z
I would go to any place that has a change sorter and ask them to save me the rejects. Some of the locals do so for me. Most, just throw them in the trash. All banks will not take the coins to send back, they only do the paper currency. Our coin club gives young Numismatics, so they can learn.
I've been metal detecting on and off for over 25 years. Went to Panama Beach Florida about a month ago. Spent 9 days metal detecting in the water and on the soft sand higher up and hard sand by the water and found nothing of importance. Ughhh. Went home and went to a middle school soccer field and found over $5 in clad in two hours. It is a thankless hobby but here are a few of my earlier finds. Throwing a few quarters in the dry sand would be a nice diversion for any detectorist. NO PENNIES please. LOL
How profound! I'll give good odds that soil in a plowed field moves, relatively unlike the ground where intact remains of numerous items have been found (e.g. Pompeii, Italy or Bad Lands, S.D. USA). A coin generally has a greater specific gravity and inertia than the surrounding environment along a shore line, being more likely to remain stationary, being buried in silt. JMHO
Ah, the good emperor Franklinium Rooseveltius. An exceedingly rare example and definitely worth millions.
As a beach hunter with an metal detector, the answer is yes to all! In the winter time the sand goes out, in the summer, the sand (and some coins) come in. If there is a winter storm, more sand is pulled off the beach and unburies coins that were previously deep in the sand. I find fresh coins and old coins. If you are in a place where the tides are minimal, less movement of the coins and sand takes place.