I was never sure about exactly when the SRD straps were introduced but I came across some info about it. An instruction published on the 15th of December 1942 states that the new SRD straps would be available "shortly". Each Bann was to receive 200 pairs each directly from the RZM in accordance with a distribution plan from the RJF Organisationsamt. The instruction also implies that some SRD units had been using different straps or indeed making their own and that this was to stop immediately.
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