James, Nice mate to my 1936 Model 31A "Standard" Grade, 28-inch Full with an extra 26-inch cylinder --
509185 02.JPG
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The next year things changed. Remington introduced the Model 31AP "Standard" Grade with a plain stock and a ringed slide handle --
Model 31AP Standard Grade.jpeg
and the checkered guns became the Model 31AC "Standard" Grade --
Model 31AC Standard Grade 8-37.jpg
By 1939 the gun with the plain stock and ringed slide handle was the Model 31A "Standard" Grade