that unit is in algemeine ss I number 2/1 in the necklace please

[rameses]

I have bought this photo recently, I have a question this clear that ss is an early photo of algemeine, in the necklace of the soldier of algemeine ss does not have the double runa if that has this numeration (2/1) my opinion is not that ss is the change of the uniforms of brown color to algemeine following the style of the SA I not to be safe.
my question is that ss means the unit of neck 2/1 in the photo of algemeine to have if they can respond to my question thanks in advance to me.

regards
xisco

[rameses]

please question number algemeine ss collar insignia 2/1

nobody knows to answer ami asks? ningun expert in units of algemeine ss?
number algemeine ss collar insignia 2/1? what is....
please.
regards
xisco