The 1944 film "Raiders of Ghost City" is a Western serial film with 13 chapters. The film is set in 1865 as the Civil War was ending. It has the usual serial gun fights, fist fights, horse chases, and each chapter ended with one of the heroes in jeopardy of being killed. In 1865 Prussia was a powerful independent state in what is now Germany.
Prussian agents posing as Southern Confederates have been robbing gold shipments. Captain Steve Clark is a US Government agent and along with a Wells Fargo detective Idaho Jones and Kathy Haines, another detective, set out to expose and stop the Prussians. The Prussian agents use European coins with dates of 1752 to recognize each other. There are four real coins from Britain, Germany, France, and Netherlands which appear several times.

The four coins are:

The coins were minted in the late 1800's and early 1900's but for plot reasons have the date 1752 added to them.

It is early 1865 while the Civil War is still raging and the United States (US) Treasury Secretary calls on Secret Service agent Captain Steve Clark to go to the California gold mining town of Oro Grande to find out about Southern Confederates which have been raiding gold shipments from the town to Omaha.

In Calfornia Steve meets Wells Fargo detective Idaho Jones and the Wells Fargo station manager Cathy Haines.

The raiders are believed to be Southern Confederates as a Confederate captain is travelling with them. The captain discovers who he is really working for and before dying informs Steve about what he has found.

Steve travels to Washington D.C. and visits a Treasury department official.

They wonder why these unusual foreign coins have been turning up.

The top coin is a British coin and the bottom coin is a French coin.
They are identified in the film as having been found on two dead men.
Both of these coins will appear later.

Alex Morel is a Prussian agent and so is Trina Dressard who poses as a saloon girl.

The three coins on the left are hard to identify. The small coin with a "10" on it appears to be a German 10 pfennig coin. The coin on the right is a German two mark coin which was issued in 1901 to commemorate the 200th anniversary of the Kingdom of Prussia. The two heads are kings Frederick I and William II

The railway porter takes the coin to another agent. Some raiders including one named "Rawhide" catch up with unconscious Steve and search him, finding a coin.

The coin is then shown.

The reverse of a French coin is shown with the added date of 1752.

The French coin is a Third Republic (1870-1940) two franc coin.

Steve and another government agent examine a set of three coins which they have obtained.

The German coin, the French coin, and now a British coin.

The British coin is a Queen Victoria florin (2 shillings).

Idaho meets Trina and shows her another coin and asks if it belongs to her. She recognizes the coin, a fight occurs in the saloon, and Idaho ends up with the coin.

The coin obverse appears. The coin is mounted in a coin bezel frame with a ribbon attached.
The coin is then turned over to show the reverse.

The Netherlands coin is a Queen Wilhelmina one gulden coin.

Later a government agent watches while Steve examines the Netherlands coin.

Steve finds that the coin is hollow. These types of coins were sometimes called "magician coins".

The coin name is "VonMerck" which is Trina's real name.
The British coin appears again but with a twist.

The British coin's reverse appears.

Steve discovers that the coin is also hollow.

The message is "6X6" and identifies an agent. The American agents discover that the date 1752 refers to a supposed paper written by king Frederick the Great on how Prussia can conquer the world and that the Prussians have been stealing gold so that Prussia can purchase Alaska from Russia. Steve contacts a group of gold miners and asks them to help round up the raiders. The Prussians realize that they are in trouble and a Prussian agent visits an Indian tribe.

The Prussian agents convince the Indians to attack the town of Ghost City to divert attention from their scheme.

The cavalry shows up and there is a four-way fight between the cavalry, the miners, the gold raiders, and the Indians.

Cathy knows that Trina is an enemy agent.

The battle ends with the deaths of most of the raiders and Prussian agents and a peace agreement between the cavalry and the Indians.

Trina climbs into a wagon loaded with stolen gold and the driver takes off followed by Cathy on horseback. The wagon is in an accident and Cathy retrieves Trina's coin from her body.

Trina's Netherlands coin appears again.

Steve, Idaho, and Cathy travel to Washington D.C. to meet with Treasury officials.

A Treasury official tells the three that the Prussians have been rounded up and that the United States is negotiating with Russia to purchase Alaska.

Dennis Moore as Captain Steve Clark
Joe Sawyer as Idaho Jones
Wanda McKay as Cathy Haines
Regis Toomey as Confederate Captain Clay Randolph
Lionel Atwill as Alex Morel (real name Erich von Rugen)
Virginia Christine as Trina Dressard (real name Countess Elsa von Merck)
Directors: Lewis D. Collins, Ray Taylor
Writers: Luci Ward, Morgan Cox