Identification
Easy. The Type A razors are the only repeating razors with a round handle.
Stamps on the side of the stem
Some or all A Type razors have a number stamped on the side of the stem connecting the head to the body. Here are some examples:
  
Model A - ★27
 
 
  
Model A - ★37
Image: Norcalnewb@TSD
 
  
Model A - 37
Image: jmudrick@TSD
 
  
Model A - 47
Image: Hodge@TSD
 
  
Model A - 106
Image: GDCarrington@TSD
 
 
Examples
Type A with grooved, smooth handle
Images: jmudrick@TSD
  
Back view
 
 
  
Front view
 
 
  
Head front
 
 
  
Head back
 
 
  
Left side
 
 
  
Right side
 
 
  
Bottom view
 
 
  
Bottom cap
 
 
  
Razor and cap
 
 
  
Bottom cap removed
 
 
  
Razor with cap