Antique Hopf violin with case

I have six of these chairs.  My mom got them from an antique store, and they are over 100 years old.

I know very little about them - they are all a little different, and they look handmade.  Anyone know anything about them?  Are they worth anything?

I inherited this foreign currency, do not know the location of origin (possibly China or Japan) and wanting to know the value if any.

I inherited a 5 Reichsbanknote, wanting to know the value if any. Not in mint condition, small tear and fold creases.

I got this spoon while in China recently.  It's 8.5 inches long, including the 2" bowl...shaft seems slightly offset from center of bowl... Virtually certain it's made of silver. But mainly what I need to know is what the stamped Chinese characters mean on the back.   I have done some research and asked Chinese friends to no avail.  Value would be nice, but mainly trying to find out anything I can about it ie. can the characters be matched to a maker or time period?  Thanks!
 

Ceramic soda fountain syrup dispenser with stainless pump mechanism. Robert M. Green, Philadelphia Pa. logo.