1920 production with "S.A./flaming bomb/2-20" marked barrel, hooded fixed blade front and folding ladder rear sights with volley notch, and correct Mark I cut-off and Mark I disconnector in the sear. The original and scarce Pedersen recess "S" stock is marked with an "eagle head/Y49" inspection mark on the bottom ahead of the magazine floor plate, "eagle head/Y96" mark on the left side behind the magazine cutoff recess, single circled "P" proof, and has a smooth steel trapdoor buttplate. The bolt body has a black finish in the same style as seen on Pedersen devices. Includes a dark leather M1907 sling with brass hooks and faint manufacturer markings.