This is the very SS Dot pattern jump smock that was on display at the La Gleize Museum. It is one of the few known originals. Originals are all textbook and made exactly like Luftwaffe ones. They have all been traced to supplies found at Dachau, at the end of the war. This one never had the zips placed to close the pockets. All buttons are there as well as PRYM 6 snaps.
Michael D. Beaver did a solid study of these in his book "Uniforms of the Waffen-SS" and this is the very smock pictured on page 898.