Help needed on F Guiremand holster (lot's)

[Danscudas]

I have not seen this exact style of holster in the other "sticky" posts on this thread. I picked up this holster on Ebay in pretty rough shape and had a shoe repair guy sew up several issues it had.

I am wondering if any of you know what this one may have been made for, commercial, police, military, etc.

Also roughly when it was made. According to another thread it was made in Berlin SW. The markings I (may) have been able to identify are as follows:

With flap lifted and above and below the strap nub you pull to lift the gun. I.Z.A. and below 1n.b.

To left of where brass button that hold down strap goes over. S.A._ _37 _ blanks like this means I cannot read it.

With flap lifted and below tool holder and backside of buttom that strap goes over. FGuiremand SB_ _ MSW1918 (This is picture 3)

Back of holster to right of right belt loop as shown in picture 2. SBS.I.R.468 and under that S.B.8468

Thank You much for any input here.