Pocket Knife & Fork with Long Blade, Made in Germany

Made in Germany by Giesen Forsthoff Rostfrei.
This is an unused item, but it is about 35 years old and shows signs of age. However, I believe there are no noticeable scratches or stains.
How about for camping?
I think I bought it in Germany because it's rare.
I have several other types, and German-made knives are good.
Size: Overall length approx. 25.5cm
Blade length approx. 10.7cm
Fork length approx. 4cm
Folded length approx. 13.8cm
Thank you for looking.