S.A. Uniform Information

[ignatius]

Hi all,
very often I come across S.A. uniforms for sale, mostly overcoats and brown shirts, but some have got piping around the collar and others do not. Can somebody explain the difference between an S.A. overcoat with pipings and one without. I presume that one is an early overcoat whilst the one without piping is a late war one. Can somebody confirm this and comment about all this.

Thanks and regards