There are spoons from six different cities, and the spoons are all made of .800 silver (80% is one of the continental European standards, like how 92.5% is in Britain/North America)
From left to right:
FRANKFURT / M.
HEMER / WESTF.
Two depict scenes, while the other seven depict city/state arms.
The Kehlsteinhaus and Rudesheim appear to be made by "REU", the Soest piece appears to be made by "KARO" while the other six appear to be made by "ANTIKO".
As a reference, the Heidelberg spoon is 10.2 cm (4") long.
Total weight is 82.7g
While it would be a bit of a shame, you could chop off the top part of the spoons to make travel charms (!)
For more vintage souvenir spoons, please visit www.etsy.com/shop/greenlandturtle/
For more antique silver collectibles, please visit www.etsy.com/shop/sterlingdelights/