Savage introduced the flat-sided black gun-metal finished SP-/SPE-Grade in the summer of 1932.
SP-Grade Introduction.jpg
By 1935 Savage added a Skeet & Upland Game Gun version with some scroll engraving on the frame and barrels --
SP Grade Skeet & Upland Game Gun 1935 retail catalogue.jpg
As things were approaching the end, Savage used up some of the SP frames to make Fox-Sterlingworths --
137963 05 cropped.jpg