Leaf Spring ID

Need help to id a set of leaf springs.
One set # 717 65 1909 in three group above each other just at the center bolt.
The other set has # 717 65 1279. A bit strange since both numbers ends uneven...
Numbers are on the last leaf and springs have A-body front segment length.
I hope someone can help, as nothing shows up when searching on the web.
Thank You
Stefan