The television program "Alfred Hitchcock Presents" was a crime-mystery series which ran on the CBS Television network from 1955 to 1962. The episode "Don't Interrupt" from 1958 featured a 1922 Peace silver dollar. Mary and Larry Templeton along with their son Johnny are passengers on a cross-country railroad train. Johnny likes to talk and when another passenger tells a story Johnny interrupts too many times. Johnny's father offers him a silver dollar if he can keep quiet for 10 minutes. Johnny sees something outside the train window and wants to say something but he keeps seeing the coin which gets larger through the episode.
The Lucy Show & the 1912 S cent: http://www.brianrxm.com/comdir/cnsmovtv_lucyshow_coincollector.htm Or how about Streets of San Francisco and counterfeits: https://www.coinworld.com/voices/gerald-tebben/2015/01/as_seen_on_tv_murde.html
There have been several period movies set in certain periods of history...revolutionary, old westerns, and early-mid 20th century, etc...that have shown quick glimpses or exchanges of coins, and for the most part they have been pretty accurate with the coins of the era portrayed. Much (though not all) of paper money in older movies has been fake/play money...actually think there was a law at one time prohibiting the use of real paper money in movies, both for security and counterfeiting...but doesn't seem that way with coins. I've recognized Standing Liberty quarters, Morgans, Seated Liberty issues plus Gold and others in various period movies.
I'll be watching for that Hitchcock episode, thanks. I think it was Dobie Gillis where they used the dime that thought was valuable in a pay phone to call the coin dealer.
I'm always interested in the old westerns from the Sixties where the character enters a saloon, orders a shot of whiskey then takes a coin out of his pocket and tosses it onto the bar. There's never any change given, and if you've seen enough of those old shows, that same coin will easily cover the cost of a bottle of that same whiskey AND the cowpoke can use it to pay for his hotel room or, in the case of Gunsmoke, that same coin will buy meals for Doc, Matt and Chester at Delmonico's.
I remember an old Roy Rogers episode where some old fake Double Eagles turned out to be made of a metal that wasn't very expensive at the time they were made--platinum.