It is for picking boogars out of your nose.
Fur Toasting Zwei Marshmallowz?
I think it might be horse / farrier related
british humor ??
Shoehorn, why not .........
I think its medical,seen similar before can't where.
by the Friedrich Herder Abraham Sohn (son) company in Solingen. the ace of spades was the company logo. they produced mostly knives and scissors and there are hundreds of different sorts of knives for all sorts of professions. what is the length of this piece? how thin does the flat end get... is it flexible? might help.
Looks like it might be for pulling rope or cord strands - used for net repairs perhaps?