I've heard that submarine crew often carry a coin with them. I'm curious about the reason behind this tradition. Is it for a specific purpose or just a superstition? I would like to know the significance of carrying a coin on a submarine.
            
            
            
            
            
            
           
          
          
            6 answers
            
            
  
    
    Michele
    Tue Nov 12 2024
   
  
    Challenge coins have a rich history within military and organizational settings.
  
  
 
            
            
  
    
    EthereumLegend
    Tue Nov 12 2024
   
  
    Initially, these coins were presented by unit commanders as a token of appreciation.
  
  
 
            
            
  
    
    BlockchainBaron
    Tue Nov 12 2024
   
  
    They were given to members of the unit who demonstrated exceptional achievement or service.
  
  
 
            
            
  
    
    noah_smith_researcher
    Tue Nov 12 2024
   
  
    Over time, the significance of challenge coins expanded beyond mere recognition.
  
  
 
            
            
  
    
    IncheonBeautyBloomingRadianceGlow
    Mon Nov 11 2024
   
  
    Members began to exchange these coins with each other, usually during visits to other organizations.