This is a Deutscher Radfahrer-Verband (German Cyclists' Association) buckle and belt. They appear to be very uncommon and I can not find much documentation on it.
I am also unsure of the motto. Maybe All Heil or All Safe?
The DRV was a branch of the NSRL but appears to have also been a training and recruiting source for the Heer bicycle battalions.
It is much smaller in diameter 37mm vs a period 47mm officer’s buckle (DLV/NSKK).
I've attached a bicycle club photo with members wearing a similar style buckle.
Bookmarks