The bit I have is an older KK Sprenger snaffle stamped "KK Germany" (correct me if this is not Sprenger).
I am not sure whether it is Aurigan or German Silver, but it is quite a heavy bit. Measures 6" from the inside of each bit ring (rings are stainless steel).
This bit is way too big for my horse and am looking to swap for a similar style bit. KK or French link style and made of gold, brass or other alloy (not stainless steel). Prefer another Sprenger but will consider imitations.
Will also consider selling in order to buy replacement, but prefer swap.