13 '' german lot ' hallmark ? T in a O hallmark engraved ?

Hello everybody,
I have bought this small hunting sword with his small knife
I think it is a german model, look old but the small knife seems really recent ( there is a ‘‘T’’ stamped ( cf pictures) ?

On the hilt, there is a 13 engraved, I think it’s an old german-austrian lot for 812 silver.

There are no other hallmarks ( nothing stamped on the scabbard mounts ).
Anybody can help me to date it ?
tell me more about origin and if it’s real silver ?!

Kind regards

pictures
IMG_20161116_124602.jpg
IMG_20161116_124757.jpg
IMG_20161119_202801.jpg

Now it’s ok with picture size !! :smiley:

Some others picture of the small sword.

Kind regards !!
IMG_20161116_124838.jpg
IMG_20161116_124727.jpg
IMG_20161116_124641.jpg

Is there anybody out there ?

Obviously nobody who can help…